U can stay there at the hotel too and still do the water park?

Thank you, you could stay at the other hotel and still get into the volcano bay water park with a ticket correct?

At the cabana hotel they have their own private entrance to volcano bay

Yes

I don't know. We stayed at another place

Volcano Bay, has its own resort. And the other like 5 all have a bus that comes to pick people up. Your best bet would be to stay at one of the resorts included with the resorts as its less resource wasted to get the park itself, cause they provide transportation.

Yes, from the Cabana hotel you can go to the water park too and they open the park one hour before (9am) for the residents

Yes thats correct

Yes, you can