Fuji-Q Highland and Mount Fuji Trek

Hello. I and my friends are planning to go to Fuji-Q Highland on a Saturday and start climbing Mount Fuji on the same day from 6 pm. But many of them are worried that they won't be able to climb due to the exhaustion in Fuji-Q Highland.
We have a full Sunday for the rest, though. Can someone tell me if it can be done ? I would be really grateful ! Thanks a lot!

It's doable if you are reasonably athletic, although it'd probably be better to use the Sunday to rest before the hike and then climbing Sunday night. Provided you can make that work in your schedule.

Its gonna be quite tiring doing both on the same day.
don't forget you have to queue in between rides (approx 30mins-1hr per ride for the popular rides). Whatever you do don't go for the Fujiyama as your first ride cox you will prob sh*t your pants lol.
I will suggest doing Fuji-Q on 1 day and leave Mt Fuji climb for an overnight climb. Don't bother staying in those mountain inns on Mt Fuji. Alot of people complain its too noisy to sleep.
Hope it helps