Cancelled Juneau excursion last minute for this Tues- combo Mendenhall and tram

[Jlhutch6]

We’re only in port 4-8pm. Will we be able to disembark at Juneau port this week and get to a kiosk to purchase a round trip to Mendhenall Glaicer right away? I’m looking for one that takes me directly to visitors center and leaves enough time to walk to Nugget Falls?? Also, will we be able to get off the tour bus and ride the Mt Robert’s Tram on our own in plenty of time for the ship leaving at 8pm. I’m not sure how many glacier buses are running with last minute purchases and lines for the tram. I have MS and can’t stand forever either! Thanks for any advise. I’m trying to avoid booking one or the other through Princess bc I want to be efficient and get both in.