We did a long tour in this area this summer, flying into Spokane, stopping in Coeur d'Alene, ID, where I grew up, then driving to Glacier, Bozeman, Yellowstone, Laramie, WY to visit my sister, then finally to Denver, from which we flew home. In Glacier, we stayed at all three of the historic lodges: Lake McDonald Lodge, Many Glacier Lodge, and the Glacier Park Lodge. My favorite of the three was the Lake McDonald Lodge, mostly because I thought that it was the most intimate and cozy. Our stay at Many Glacier was marred by an early morning flood in our room as a result of a burst pipe (the place is lovely, but it is in dire need of refurbishment). I would think that if you want to stay in the Swiftcurrent, and have some meals at Many Glacier, that would be enough to thoroughly enjoy it. Have afternoon fondue in the lounge, then bring your binoculars to the large picture windows overlooking the lake. Sometimes you can see bighorn sheep on the side of the mountain opposite the lake. We played a really fun round of golf at the golf course at the Glacier Park Lodge, and had a fantastic dinner at a Mexican restaurant in East Glacier (sorry, I can't remember the name). We arrived in Glacier at the end of June, which really isn't summer yet. Going to the Sun Road was not completely open, which threw a bit of a wrench into our plans, but we did take a Red Bus Tour as far up the road on the west side of the park as we could, and that was a lot of fun.
Glacier is, I think, one of my very favorite NPs. It is absolutely gorgeous, and is not very crowded. Have fun!