I have read that the current crowd levels are very high. Is it possible to park hop from IOA to Volcano Bay? I’m thinking that it will probably be at capacity by the afternoon.
You can if you have the 3 park ticket. I don't know for sure, but my guess is Volcano Bay operates the same as the parks when it reaches capacity with a queue that forms and priority given to on-site resort guests.
I don’t think the non-water parks are hitting capacity anymore. I think everything is wide open with no restrictions. At least, that is my impression from someone who went last week and goes frequently.