We have about 8 hours in Juneau when our cruise ship docks and would like to go to the Mendenhall Glacier. Our ship arrives around 12 noon and leaves 8pm. The cruise ship excursions are ridiculously expensive and we have heard about bus trips that only cost $16 return to the glacier. Do these buses - and are they blue or white - have proper seats to sit in ( I have a bad back) or are they the school bus variety? Do people recommend having a look around Juneau first then getting the bus to the glacier or going there first. What time do the shops in Juneau close? And finally (!) what time is the last bus leaving from Mendenhall glacier back to the port area? Thanks.