Well, the options are:
Take 3 weeks off and really enjoy your holiday and refresh, and come back ready for training after your holiday.
Or, find a gym while you are over them and get some training in.
Or, do some plyo work like clap pushups, squat jumps etc
Sorry, I haven't answered you question for you because I'm not you and have different goals.
Depends on what is important to you, completely enjoy holiday and forget about training for just a few weeks, or do some training while over there to keep in touch with it.
Only you can decide this.