Like most of Alaska, Glacier Bay has no major roads to the best sight-seeing areas. That means a cruise. You can fly into Gustavus. It's been years since I've done that. There are day boats that go from near the mouth of the Bay to the sightseeing areas. And there are cruise ships that do the same, but that's a different kind of trip. If you need any reservation help, my wife is a travel agent.
2004 Tiffin Allegro 27.5 ft. P32 18,000 lb GVW. 8.1 liter. Workhorse chassis built May 2002. 21,000 miles. 2012 Jeep Liberty Toad. RVi2 brake unit.