How do I show I'm going on vacation?

@whodey said
How do I show I'm going on vacation for my games?

The vacation booking facility is only available to subscribers.
You could put it on your profile, but your opponents wouldn't be bound to look.
The best way would be to tell all your current opponents by message via the "chat function"

@whodey said
How do I show I'm going on vacation for my games?

Resign all your games lol.