I would not burn a 6 cert for the FS Marriott for Friday evening. Up the street is the RI, and a short walk to Teds Montana Grill, a solid uptick over other dining chains.

Further north the group of SHS, CY & Fairfield are all modern. SHS is adjacent to Ruby Tuesday’s, again an uptick over Applebees and Friday’s in my opinion.

No parking fees at any of them if for some reason you have a car for this event.

The Marriott properties shuttles are as good as it gets for any major airport.

edit: one reason for the great shuttles is that the Marriott family at DEN does a big stay/park & fly business. Lots of eastbound hops are really early, so they offer an overnight the day before you leave, shuttles start ~0330 & the packages bundle a reasonable daily parking rate for x days thereafter. It often works far better than parking at the various DEN options. Ive done this a lot at the FS Marriott and if you get the right rate its a no-brainer.