Questions you may want to ask when searching for a venue:
What is the fee, and what is included in the cost?
How many events do you host in one day?
Is there a coordinator available, and is this an additional cost?
What is the maximum number of guests you will allow?
Can your own decorations be brought in? Food? Other?
What sound equipment is available?
Are there certain areas of the venue you will not have access?
What is the time you can get into the venue, and when do you have to be out?
Can you choose your own vendors (food, band, photographer, etc.), or do you have to work with the vendors the venue uses?
This site has a downloadable list of questions to ask when looking for a venue. No matter where you decide to hold your wedding/reception make sure you have all the answers to your questions and have a signed contract well in advance.