I don't know if it's been mentioned here before...
We've made an informal schedule that Wednesday evening will be the regular weekday evening get together at TEMAC again this year, but if the weather is ugly on any particular Wednesday we'll default to the Thursday as a back-up. That way we won't have to miss too many weeks this summer [:D]
I think it's safe to say the same applies to training. Even if the official instructors can't be there, there will almost always be someone who can help the students get some stick time.
Robert