We ended up here on Saturday night, I was staying at Bally's and it was right next door. I hadn't been back to Vegas since January 2013, so the whole Grand Bazaar area was completely new to me.
Detroit actually *just* got a Wahlburgers recently, but we were in line for Burgr (Gordon Ramsay restaurant at Planet Hollywood) and were quoted an hour, so we decided to check this out - I went with a Yelper who now lives in Vegas, and his girlfriend.
There are really only 3 burger choices which surprised me ... okay, maybe 4 - the plain burger, the regular burger (essentially the plain burger but with cheese), the double burger, and the triple. I got the plain burger and added tomatoes and pickles, plus mushrooms ($1 upcharge). We ordered the onion strings (yes, strings) and the sweet potato tots too to split.
My burger was overall fine, nothing special but that Wahlburgers sauce is really good. Almost reminded me of In-N-Out's sauce, actually. The onion strings were good but the sweet potato tots were fantastic, so I'd get those next time. The burger will cost you about $9.99-$10.99 and sides are $4.99.
Hoping to check out the Detroit Wahlburgers now! It's a bit pricey for what you get but overall the food is delicious.