We have stayed at this property on two separate occasions.
The main reason for staying at The Ahwahnee is primarily for the LOCATION. This is a 3-star hotel operation at a Five-Star-Location!
There are better accommodations in the YNP area, but you will need to drive 1 hour each way to stay there.
My recommendation is to stay at least ONE night at this iconic hotel. The brunch is quite reasonable, considering you're a captive audience.