glad you're happy.

two ways to do a shower that is wheelchair-accessable that I can think of (not a contractor

1) a walk-in design with a wide doorway and you ramp down a couple inches worth to drain level over maybe 8 to 10 feet.

2) you pay a zillion dollars for a special shower unit with a waterproof door and gasket that has a limited number of installers/servicers.

it is possible to mess either one up. get references from others in the other-abled category on what works for them, and who does it right.