Atlanta, Georgia

My mom's 50th birthday is in May, and my dad and I are planning to throw her a party. The downside is that neither of us really knows the first thing about throwing a party :)

1) What we are looking for is a hall or rented space of some kind. We are thinking there will be about 50 people and we're going with a "Fiesta" theme because mom is the queen of tequila and margaritas. We don't have a specific budget in mind, but it should be cheap because my dad just got laid off last week. We live way up north in Acworth, but it doesn't necessarily need to be close to us since guests will be coming from all parts of town, including out of town.

2) I've heard that Moe's has awesome catering, and this is an option we are considering. Any other suggestions for getting Mexican food catered?

Thanks!