12 people in Boynton/Delray area
Prime Catch may fit your needs. It's in the South end of Boynton on the water (Intracoastal), has pretty good food and is moderately priced. In Delray, Dada will accomodate your large group, as well. They, too, have pretty good food that is moderately priced and your group can enjoy outdoor dining in our nice weather.