There are a lot options, the Hoover Damn, the Gran Canyon, Rock Climbing, ATVs, Dune Buggies and considerably more.
The cruise addresses both gay singles and couples, with rates starting from $3999/person. This is where 70% of males end up anyway, so don't melancholy. https://www.sociopost.co.uk/story.php?title=thinking-of-traveling-in-greece-this-travel-guide-will-allow-you