Bring as much as you can afford to lose. I have a lot of cool stories but also have some pretty bad ones lol. House wins in the end.
I believe in beginners luck. Play anything, play aggressive, have fun.
If you are doing slots do $1 and up denominations. Those have higher payback %.
Blackjack is streaky so bet aggressive when you're winning. Learn basic strategy before you play. You can also buy a card at the casion that'll help you.
Roulette is a sucker game but very fun and you could win a lot of $ quickly.
If craps is available play this. It is the funnest game to play as a group. Very difficult to learn if you don't have any gambling knowledge though.
Gonna be in Vegas tmw, wish me luck!