It sounds like you parents had a wonderful start to their visit

I certainly wouldn't expect them at 9am after all that BS and late arrival, nor would I be happy about that. I'm sure you're thrilled since you had no sleep

I hope that you can figure out some things to do together (separately) without too much hassle, and I hope this ends up being a nice visit...
I know that it will be stressful for you at times tho