West Yellowstone or Gardiner?

Westernrvparkowner, we would love to do Glacier and/or the Tetons, but due to time constraints (we aren't yet retired), we won't be able to. It's 2 days up and 2 days back which only leaves us 4 days to explore while we're there. So we will just have to try to make the best of the time that we do have. I've got plenty of time to plan between now and July and I will continue to research. But if I can find out where the must see places are before we get there, it will save us from having to plan on the fly after we arrive. Now having said that, Yellowstone isn't necessarily set in stone either. Montana is so big and there is so much to see that it's difficult to decide just exactly where to land. We've never seen Yellowstone, so we just figured we'd go there, but if we were to find somewhere else better, then we are open to altering our plans.