If you want to use Uber and are going to or from a BoardWalk location, why wouldn't you Uber to or from the BoardWalk hotel?
If you arrive at the hotel and need to get out to the BoardWalk: walk into the hotel, through the lobby and out the back door to take the stairs down to the BoardWalk. (If you need an elevator, it is past the check-in desk.)
If you are on the BoardWalk: walk up the big stairs to get into the hotel. Walk through the lobby and out the front door. Request an Uber from there. (If you need an elevator: when you are facing the big stairs, there is a path to the right. Follow it and it will take you to a hotel entrance where you can get an elevator to the lobby floor.)