Common collocations for 'join'

a club, a group, a team, the army,the police force, the air force etc. (Not a tour).

join +obj (for something)
Especially for social occasions:

Would you like to join us for dinner tomorrow?
We’re going hiking on Sunday. Would you like to join us?

Orignal examples

Can you join us for dinner on Saturday?
We went on a tour to Japan.