Which is the better Wolfgang Puck Restaurant for food and for ambience?
Spago or Wolfgang Puck Bar & Grill
I give a slight edge to Spago for food; although I haven’t had a bad meal at either place. As for ambience, the Bar and Grill is in the middle of the casino floor and Spago is in the middle of a mall walkway intended to replicate a cobblestone street - don’t know based on your post if you have been to CP Forum Shops or not. If you choose to sit "outside" at Spago you will be able to people watch as the tourists stroll through the Forum Shops. If you sit "inside" at Spago it is a quieter and a more subdued environment.
Better ambiance at Spago but I like the food better at Bar & Grill. Be aware though that it is lively and loud and located on the casino floor.