What is available to help get into and out of the tub? I am using a walker due to severe neuropathy from diabetes.

There are two ways to go depending upon your abilities. One is a shower bench. Two legs of the bench go into the tub, the other two outside. You sit on the bench and slide over by swinging your legs over the side. If you can't do this, there are platforms that sit on the floor raise the floor up so that you can step over the side. You also need a sturdy handle bar on both sides of the tub. (you may already have one built into the side of your tub.)
good luck