Taking girl on double date to Houston Livestock Show & Rodeo?

Have a friend who introduced me to his cousin we all went out one night when I was visiting and we hit it off. We went dancing. Had a good time with them. His cousin is so cute, pretty, and sweet. She seems to be a really smart girl too. I am a little older than her actually quite a bit...LOL !!! Anyway I have never been married or anything and have no kids. My friend was talking to me and I told her I really like the rodeo and have some friends that are major label entertainers who perform each year there. I mentioned to him that I would love to take his cousin to it. Well he text me the other day and said she said she would love to go with you. I couldn't believe it. I am glad to hear it though. What would be a great first date besides going to the concert and meeting the entertainer afterwards. Dinner at a great place, maybe going to carnival at rodeo, give me some advice because I am 35 and she is 19 we will have my buddy who is 32 and his girl that is 21 with us. THX