I'm going to post one of those really annoying not very informative posts based on no actual knowledge of the situation, but state it like I no for sure it's true!
Yes! You can!
hmmm....
No! You can't!
Seriously, I don't think this is something that is encouraged, but I don't think it's strictly against the rules tho. It could be a bit of 'mare, in reality though as leaving on Tuesday you'll have to go against the flow of vehicles entering the field, and may struggle to get back off site. Also, as you will be all 'passed' up and stickered on the way in, getting back on site may also be an extra level of 'fun' involved.
Am sure people do do this, but not many as I suspect it's a right pain and will take hours longer than expected to achieve!