First filter
Which port are you in, and how long is the stop?
The mistake is trying to do everything. Alaska cruise excursions work best when you choose one strong lane for the port day and leave enough room for transportation, weather, and return timing.
Which port are you in, and how long is the stop?
Budget and mobility decide how ambitious the day should be.
Helicopter and flightseeing days need more flexibility.
Do not overbook the day just because multiple tours look good.
If you know the port, start there. If you are still choosing broadly, use the chooser to narrow the day into the best-fit lane before opening tour options.