Consider taking the jitney to The Borgata Hotel and Casino. It's a great place to walk around, gape, shop, etc...It has the best buffet in town. Many of the selections approach gourmet level and the atmoshere is very pleasant and comfortable. Lots of food is cooked to order in front of you. Apply for a Players club card (free) and you will receive great comp offers for future visits. I find them to be the most generous of all the casinos re: free rooms, slot dollars, show tickets, etc... even if you do very minimal play, especially Between Labor Day and Memorial Day, which is the slow season.
Will you be coming in on a Greyhound bus to the AC terminal, or taking one of the almost free buses that bring you right to the casino? They stop at different locations. If you let me know where you will be arriving and departing, I can give you some good tips. Are you coming and going on the same day? If so, you will probably have only 6-7 hours max so it will limit your choices. But if you will be staying for a day or two, then there are far more options.
If you come on a non-holiday Monday through Thursday, you may be able to get a free room at a casino. Do you have a players card from any casino from a past visit? Even if you did very little play, they may offer you a free or deeply discounted room if you call and ask. No harm in trying. Business is off sharply due to the economic situation and they have many vacant rooms. Or you might be able to get a cheap deal from RCI or one of their travel partners for a night or two at the Wyndham Fairfield Skyline Towers or the Atlantic Palace.