The Poly has a zero entry pool, which means there is a gentle slope to enter the water as opposed to a stair/ladder.
There should (and used to) be a water wheelchair available- one can borrow it and go straight in.
During the time of year it looks like your going, traffic should be a bit slower than high season- should make the pool a little more empty, giving more space.
Do be sure to let the lifeguard on duty know what's going on and you/your husband's concerns and past experience.
Don't go swimming alone (good advice for all).
-steve