Mike is a very colourful character, and a source of many stores about the area and its inhabitants. It is well worth to hand around him and just listen for a while. I thought that the jungle house I stayed in was a unique and worthy expedience in itself (the sounds of the jungle and the howler monkeys at night is a thing to experience), until I opted for the extended tour of the cave.
Let's just say that after being disillusioned by the usual tourist traps on the coast (the reef is in a terrible, horrible shape) the cave alone made it worth the trip to Belize. I'm coming back with my family and this time we'll avoid the dead reef and start the visit at Mike's place instead.