AMAWaterways is doing European River cruises. Great reviews from passengers as they are sailing with reduced capacity and tourism has not returned to high levels in many of the towns.

Alaska cruises round trip from Seattle on Princess, HAL, Celebrity, Silversea, Norwegian are sailing in September and October. Some great last minute pricing.

Bermuda sailings out of New York and Boston on several lines.

Most are requiring full vaccination and are sailing at reduced capacity--which can make it a more delightful experience.