Lisa - The Conventions Terrace is at the front of the resort. It is as far away from the beach and everything else as it can be. It is only close to the Lobby Bar, which is awesome and so much fun we went there every night. But the Conventions Terrace will NOT give you a "beachy" feel for your reception if that is what you are looking for. It will be more of a "garden" type atmosphere.
If you want it to seem beachy, I would look at one of the restaurants, or an actual beach reception, which we had and loved.
The Terrace is beautiful, so it may be exactly what you are looking for, but like I said it is as far away from the beach as you can get - literally a tram ride away....