I spot-checked several dates and the only Poly club-level rooms that I see listed as wheelchair accessible have a roll-in shower. There are also hearing-accessible club-level rooms with a tub. I see regular (non-club level) rooms, wheelchair accessible with a tub; but I don't see that option at club-level. Most likely there are very few of each room type, and if they are booked they may not showing online but I did look at several different dates and only see a roll-in shower for wheelchair accessible at the Poly club-level. Assuming your TA made this reservation for you, he/she should have a description of the room type booked.
Enjoy your vacation!