There are a couple of factors to consider.

1. Are you under 21?

2. Will you be drinking?

If you're under 21...unless you get a gold card...count on spending on average $25 to get into the clubs each night. You should be safe if you budget at least $25/night for cover charges.

If you're drinking...you will obviously need a lot more money. But even if you don't bring a lot of money for alcohol...people are more than willing to share. That's one of the best parts of spring break. Everyone's friendly...they'll share ANY thing.

For me...I don't drink...so I'm only bringing about $250 for about 4 nights.