I don't think all the water could possibly drain off just by opening the curtain if the curtain really is draping on the floor.
perhaps our definitions of draping are different. When I position the shower curtain the bottom edge scrapes the floor. I just make sure the scrape is inside the threshold (on the inside downward slope of the bump).
All I've noticed getting wet is some splash up from water that rebounds (primarily off me) onto the curtain about 3-4 feet up. That water tends to flow downward to the bottom and then further down the shower interior to the drain. What collects is a little bit of puddle where the fabric actually lays on the floor, and that is mostly on the side closest to the shower seat.
When I pull the curtain back out of my way to exit I'm actually lifting that bottom edge off the floor. Excess water then sluffs off and down toward the drain.
The few times I've had major spillage have been when either I left the curtain open part way (especially closest to the shower bench; or I dropped the showerhead and it sprayed directly on the curtain.
I pretty much never get water on the back of the shower (opposite the showerhead). In fact, I keep my dry towel there to wipe my eyes clear after a soak. My family keeps thinking I'll get it soaked but it never does get wet.
Things do differ if a helper is assisting someone in the shower though. Usually because the curtain is left open or improperly positioned.
However, those 2BR are all lockoffs with rollin showers in both parts so you have 10 options if I understand your needs.
Now that's something I haven't seen. Usually the HA two bedrooms only have one accessible bedroom/bathroom at SSR (and all the Marriott's I've been to). 10 is good, still far too few.
And yes, you understand my needs. I'm really pretty simple: a low enough bed I can climb into it (26" requires a stepstool or a forklift, 20-22" is just right), a higher seat commode (again in the 18-20" range) and a stepless shower. I can even manage without the seat, but put a 2-4" step in there and I'm stuck with the sink only. I'd love the regular shower stalls in the 1bedrooms and up if they didn't have a step and a door so narrow that a transfer bench/chair cannot be used.
When I toured the AKV models at SSR in May, my Guide showed off the standard showers in the 1bedroom. They included no steps, a swinging glass door and a ledge along the back at just the right height for a seat. It was perfect for me, he said. Yeah, but I don't believe it's actually true to form. Every non-HA shower I've ever seen includes a 2-4" step.
These are the floorplans I studied for BCV.
http://www.parkinfo2go.com/dvc-bcv/ Wish I could find some for all the resorts.
It basically shows 3 rooms on each floor: one studio and one a lockoff. x28 is a studio LO, x30 is the 1bedroom LO (both face the quiet pool), x25 is the dedicated studio (with a tub?) and faces the lake (or back of Beach Club resort).
FWIW, of the buildings I've surveyed at SSR (and no not all have exactly the same HA proportion), xx25 is a 1bedroom with roll-in (in the center of the building and has the best views), xx10 is a dedicated 2bedroom (has a sideview which may include parking lot), and xx14 is the lockoff studio (also sideview).
http://disneydoc.homestead.com/ssrfloor.html