There are no true all inclusives on the island. The only beachfront one in Belize is Kanantik on the southern shore of the mainland for $365 per person per day. Some places will offer a meal plan or some tours but not truly all inclusive. Probably best to stay close to town for ease of nightlife, etc. The Palms would be a good choice again, right next door to Ramon's which is about the livliest resort on the island. Sunbreeze, Holiday Hotel, Blue Tang Inn, Mayan Princess may also work. Lots of choices but not all inclusive.