I only have one so it is easy really but I know what you mean.
Whenever I get dd (ie from her dads) I try to get him to drop her off at 5ish so I am busy doing tea and bath routine for a couple of hours then it is straight to bed!
If I get her back at lunchtime I just don't feel ready (pathetic huh?) and may also be a little hungover! I like to have the day to recover and relax and then hopefully I feel refreshed.
With 4 however is v different, my mum and dad used to have us week about when they split and god knows how they felt when the 4 of us returned on a Monday, full of bags, mischief from the younger two and teenage hormones from the us older girls!! Ha, especially i wasn't speaking to my dad for a long time - I bet he dreaded it!