I have a vacation coming up, and it’s always a best practice to let your clients know in advance. Communication is always key, if there is a regimen or workout you’d like them to perform while you’re out that can supplement the need for a “fill-in” This is a very dynamic field and things can happen from time to time. Be upfront and your clients will appreciate that. Remember we all have a life, just dont be the guy that sends a text 5mins before a scheduled workout saying…sorry cant make it. Be good to your clients and they will be good to you.