Good idea for an all adult party but difficult with the children though. They will let children into Pleasure Island ( apart from special events like New Years Eve which is 21s only) but there is not that much to interest them apart from the Adventurers Club. At least one of the clubs is 21s and over. If you go, make sure anyone looking under 30 takes phito ID or they will not be able to buy a drink. Citywalk does a package which includes a meal and the clubs and is very good value ( around $20 currently) but again not sure about the kids. Have you thought of a good dinner show?