They do not go any lower, they are not submarines, and they are floating.
You will notice there is a ton of equipment, which includes pumps, air conditioning handlers - all things which cannot go underwater.
Walt Disney World parks get a big boost to operating hours for the summer
Construction resumed on that project even during the COVID shutdown, but on a slower pace due to the COVID restrictions and the reduced workforce able to be onsite. So things have definitely happened on the inside, and they were not that far off even then.
Creations Shop replaces Mouse Gear this summer at EPCOT
Club Cool to reopen this summer at EPCOT...