Grand Luxe cafe has a huge menu with breakfast served all day.
The venetian has restaurants inside that are open after ten. Not only was it packed, but the food wasn't worth it.
Also I found the in n out here to be garbage. Maxie's has great breakfast but closes at 2 pm on wednesday's and 10pm on friday and saturday making it impossible to hit after the show. Yardhouse is open after u2 shows and has a huge selection of beer, and great bar food. The Linq and Harrah's has the linq promenade which has a bunch of restaurants, but some of them are closed after the u2 show. Grab a taxi out of the airport those are flat fees, and shouldn't cost you more than thirty to forty bucks. They're all within walking distance and easily walkable, but the Venetian is closer as it's attached to the sphere. Stay at either The Linq, Harrah's or the Venetian.