I'm 15, I know what this is like. I apparently got into some metal band with some people I half know about a year ago, endless talk of what we were going to do, but then nothing happened. After about 10 months I found out I had been kicked out for no explained reason! Not that I care for that matter, in my mind and everyone elses apart from theirs this band never existed, I'm in a few other serious bands (in comparison to theirs) anyway so this would have been too time consuming for me.
Most teenagers can't communicate, this is why I'm pedantic as hell and make sure every tiny detail for anything I'd confirmed. Perhaps I'm annoying to my peers, they just want to have fun. But I consider being a musician not being something you "become" when you grow up, but something you make yourself. They clearly aren't that yet.
Rant over.
You've probably heard this, but you are wise beyond your years. I work with guys who are less mature and level headed than you seem. Keep up the good work.
Why do they practice on Mon/Wed?
Couldn't the days be changed?
How about the weekend to get ready for the gig?
Also, since they didn't contact your son timely, he can always turn down the gig. No harm, no foul.
Sure he could have called earlier but they didn't even call him to let him know he was "in" the band. How redunculous is that?
M/W practice is what works for everyone else. My son joined last so he is apparently the only one with M/W conflicts. They all have track or XC practice and other things during the week. It should smooth out over the summer unless my son can land a job.
They will surely have the weekend before the gig to get ready, but my son would rather have more than one eight hour marathon session to tighten things up. At least he understands THAT concept.