When you enter the Tropicana from level one of the parking garage you are actually on level three of the casino/hotel. Straight ahead of you and a little to the left is a desk where you can check in. This avoids the necessity of going all the way to the main lobby of the hotel. To your right, walk past Ri Ra, the Irish restaurant and you will come to an elevator that will take you down to level two and access to the main casino, hotel tower elevators and the shops. If you are in the west tower you will find a sign for it when you exit the elevator. If you are in the north or south tower follow the signs to the casino where you will find directions to the elevators for these towers.
If you are at the casino level (level two) and want to go to the Boardwalk, follow the signs to the north tower elevators. Take the elevator to level one, exit the bilding, walk across the valet parking driveway and enter the Market. Proceed straight ahead and exit the buidling onto the Boardwalk
Here are some photos of a different accessible room taken several years ago