My 3 yo dd attends M-school two days a week now and will be three days in the fall. They would like the kiddies of course to do 5day all day, but that was not for us. I think that is too much for a three year old. We do half days.
Ditto on the morning routine. Usually my dd does not rise and shine till 8-8:30, so what I do is pack up the car with her clothing and all and in the morning I put her in the carseat in her pajamas. She continues sleeping for the 50 min drive to school. She then wakes up refreshed and ready to go. We dress in the car, I even have a portable potty. After the first two days, she got used to it and likes the routine.
First of all, I definately would check why you have to be there by 7:30am, that seems very early. Yes the school may be open by 7am for drop offs and those parents who need to get to work.....but the actual "school time" "program time" may not start for an hour later. Ask to see the "Schedule of the Day".......I would check to see how long the "drop off period" is. Usually they like all the kids to be there by morning line time.
As for the 5 days a week.......that is not usually "required" till kindergarten (5yo). And alot of parents have problems with that, as they would like to see half-day kindergarten as well.
Once again it is recommended five days week for all age groups, but you have to do what you feel is best.
Unless this school has a long waiting list, strict attendance demands, you probably have some flexibility. You just need to ask/insist on it.
Now having said all that...........remember kids are more flexible and adaptable than us adults. After a few days, if there are no major outburst or continuing negative behaviours they will probably adjust well to what ever schedule you choose to use. I had to remind myself of that, because my dd will have to attend 5 days a week for half days for six weeks this summer. I was in a panic over that, but it is a must. My DH adjusted his schedule so she would not have to stay all day, so it was bit of a help. She really needs that nap in the afternnoon and I would hate to have to pay someone while she is napping. I keep telling myself it is only six weeks and it is summer fun!
Another, positive......your ds will love going to M-school !