Question: how much money do i need for a trip to vegas?
Answer: $100-150 for entertainment or shopping (souvenirs, street vendors, a show, etc.) Then at least $100 for gambling if you want to last at least an hour. So $300 a day at the bottom range, but I think $500 would be more comfortable and you could gamble a bit more, add a fancier meal, go to the spa, etc.