I'm a non resident there, and was wondering (based on some reviews), is the entire lagoon open to swim? Can we swim in the deep areas as well?

once you're inside of the Lagoon you have access to everything that the residents have access to the only thing is the residents get to come in over you and they only sell a certain amount of tickets to the public but as far as swimming areas and activities it's all the same for everyone there the prices are different for residents as well nothing major where we pay $10 they have to pay 8$ where something maybe 25$ for us it's only 12$ for them but I promise you it will be worth it the band the food no matter which truck you pick the big blue slide is free all day but you have to try the obstacle course

The only deep area is over by the slide and obstacle course and yes you can swim there.