The east side of the park has some excellent views (my preferred side), and some nice drives that can be done…Two Medicine Lake, Swiftcurrent, St. Marys. There was a good steak house in Babb up to a few years ago…can’t swear to it now.
The north fork is a nice drive as well; Bowman and kintla lake are easy to access, and the town of Polebridge is cool. There is a little bar/ grill and the mercantile has good baked goods and sandwiches.
I don’t know too much about the lodging. If you stay in Columbia Falls, the cedar creek lodge seems nice and is pretty new: close to downtown for walking to food etc. might be a bit cheaper than whitefish. WF is where the rich folk live; cfalls used to be more of a blue collar mill town…it’s getting gentrified, but is still better than WF in my opinion.
If you need fuel on the east side, get it in East Glacier…Browning is pretty third world.
FCA is likely your best bet for airport.