My Theory On Alien Visitation 'Tourism'

 I have an odd theory....no science or facts behind it.....just simply a belief....that an alien culture (or two)....hang around the Earth mostly on a tourism situation.

Lets face up to this....this crowd of aliens is probably anywhere from 10,000 to a million year more advanced.  I would suggest that life has gotten to such a slow level....that 'Zorg' and 'Buorg' have found a need to recharge their batteries.  So they spend a year or two....learning some Earth language, and sign up for a tour....maybe six months long....maybe three years long.

The ship takes in a load of 300 alien tourists each week, and via some fake company they've created....have a credit card and hotel reservations arranged.  

Zorg and Buorg look enough like humans....that with a funny accent, they arrive in some place like Norway, or Ottawa, or Miami.....they settle in and get a taste of Earth culture.

Along the way, Zorg and Buorg ran into pronoun issues (they weren't expecting that), the Trump thing (they weren't expecting that), and daily assaults in major urban areas.  

It's a crazy idea....I admit.  But it begs the question....if you were this highly advanced culture, why keep visiting Earth, and tourism makes perfect sense.