It is worth looking at how other heavily touristed communities have handled so much traffic.  It seems there is ample business opportunity.  Juneau, Sitka, Seward, Denali, etc. - all have dealt with congestive tourism.  A bit of public infrastructure is certainly merited - parking that has a user fee, public restrooms that could be seasonal and maybe the tourism companies could chip in to build.  Free up any zoning restrictions and allow for more buildings to be constructed that then could harbor more businesses that could seasonally cater to tourists.  This would allow for even more revenue to be generated and is a win for the community, the tourism companies and the tourists.  I love that people from all over the world want to visit our beautiful state.