Some context: The Houston Livestock Show and Rodeo, also called RodeoHouston or abbreviated HLSR, is the largest livestock exhibitions and rodeo in the world. It also includes one of the richest regular-season rodeo events. It has been held at NRG Stadium in Houston, Texas, since 2003. It was previously held in the Astrodome.
One of the largest draws for the Houston Livestock Show and Rodeo is the 20 consecutive evenings of rodeo and concert, held in NRG Stadium. Tickets are relatively inexpensive, averaging about $29 in 2016, and also grant admission to the livestock show and fairgrounds. More than 43,000 season tickets are sold every year, with the remaining seats 30,000 seats available for individual-show sale. Members of the HLSR are given an opportunity to buy individual tickets before the general public.  RodeoHouston is run independently of the Professional Rodeo Cowboys Association (PRCA). It offers one of the largest prize purses in North America, over $2 million, but the winnings do not count towards the competitors' qualification for the PRCA National Finals Rodeo. RodeoHouston is an invitational, featuring 280 of the top professional cowboys. They compete in a playoff format, with the ultimate champion in each event earning $50,000. On the final evening, the rodeo hosts the Cinch SuperShootout. Champions from each of the top 10 rodeos in North America are invited to compete as teams in a subset of rodeo events. The finals and the SuperShoot are televised on Fox Sports.  After the professional rodeo concludes, children are given an opportunity to compete. Each evening, 30 high school students from across the state compete in the calf scramble. They are given the opportunity to chase down (on foot) and catch one of 15 calves, put a halter on them, and drag them back to the center of the stadium. Winners are given money to purchase their own heifer or steer to show the following year. Immediately following the calf scramble is mutton busting. Five- and six-year-olds wearing protective gear try to ride a sheep across a portion of the arena. On the last night of the rodeo, the winners from each of the previous evenings compete again to see who will become grand champion.  A rotating stage is then brought into the arena for the nightly concert. The majority of evenings are performances by country music singers, although several nights are dedicated to pop or rock music. The annual Tejano music night generally draws the largest crowds. The winner of the annual Mariachi Invitational competition is invited to perform onstage with the Tejano acts.
Do they have food or drinks available for purchase?
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Some context: Mumtaz Mahal (Urdu: mumtz mHal ), ([mum'ta:z me'hel]; meaning "the Exalted One of the palace"; Arjumand Banu; 27 April 1593 - 17 June 1631) was Empress consort of the Mughal Empire from 19 January 1628 to 17 June 1631 as the chief consort of the Mughal emperor Shah Jahan. The UNESCO World Heritage Site Taj Mahal in Agra, often cited as one of the Wonders of the World, was commissioned to act as her final resting place. Mumtaz Mahal was born Arjumand Banu Begum in Agra to a family of Persian nobility.
Upon his accession to the throne in 1628, Shah Jahan designated Mumtaz as his chief empress with the title of 'Malika-i-Jahan' ("Queen of the World") and 'Malika-uz-Zamani' ("Queen of the Age"). Mumtaz's tenure as empress was brief (spanning a period of only three years due to her untimely death), nonetheless Shah Jahan bestowed her with luxuries that no other empress was given before her. For example, no other empress' residence was as decorated as Khas Mahal (part of Agra Fort), where Mumtaz lived with Shah Jahan. It was decorated with pure gold and precious stones and had rose water fountains of its own. Each wife of the Mughal emperor was given regular monthly allowance for her gastos (housekeeping or travelling expenses). The highest allowance on record is 10 lakh rupees per year given to Mumtaz Mahal under Shah Jahan.  Shah Jahan consulted Mumtaz in both private matters and the affairs of the state and she served as his close confidante and trusted adviser. At her intercession, he forgave enemies or commuted death sentences. His trust in her was so great that he gave her the highest honour of the land -- his imperial seal, the Mehr Uzaz, which validated imperial decrees. Mumtaz was portrayed as having no aspirations to political power, in contrast to her aunt, Empress Nur Jahan, the chief consort of Emperor Jahangir, who had wielded considerable influence in the previous reign.  A great influence on him, often intervening on behalf of the poor and destitute, she also enjoyed watching elephant and combat fights performed for the court. Mumtaz also patronized a number of poets, scholars and other talented persons. A noted Sanskrit poet, Vansidhara Mishra, was the Empress' favourite. On the recommendation of her principal lady-in-waiting, Sati-un-Nissa, Mumtaz Mahal provided pensions and donations to the daughters of poor scholars, theologians, and pious men. It was quite common for women of noble birth to commission architecture in the Mughal Empire, so Mumtaz devoted some time to a riverside garden in Agra, which is now known as Zahara Bagh. It is the only architectural foundation which can be connected to her patronage.
What else
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The highest allowance on record is 10 lakh rupees per year given to Mumtaz Mahal under Shah Jahan.