Since this is the start of a work week after I had a week off, I thought I'd start off with some fluff while the laundry does itself ;)
1. And speaking of laundry, do you do it the last day or two of vacation (to avoid doing it when you get home), or do you wait til you're home? For me, I prefer to wait. I understand the whole, Oh, let's avoid this task when we get home and are tired!!! but seriously, that means giving up a day of vacation to get it done, and in an environment where all my stuff isn't handy. I'd rather enjoy the vacation and do it when I get home. How about you?
2. Groceries. Day you get home? Day after? For me, I usually do this the day I get home, but embarrassing as it is to admit, the fridge needed cleaning out first and I didn't do that before I left. I was only gone 3 days, so it wasn't THAT bad, but I *do* usually like to have the entire house clean and ready for me to be back, unpack, toss a load of laundry in the washer and then hit up the grocery store/gas up the car.
3, Bed linens. Change them last thing before you leave? Change them when you get home? Never thought about it? I changed them this morning. I change them weekly and I left on Thursday got home on Saturday and Monday is the day I do that anyway, so it was within cycle. If I were going to be gone a couple weeks, I'd have likely changed them before I left--except the duvet cover--I'd leave that since the cats sleep on the bed and if someone pukes while I'm gone, they'd puke on a dirty cover, not a fresh one. (And I have two duvets--a spare in case someone barfs, I can hit up the laundromat and hang it up to dry on the clothesline and still have a clean duvet on the bed)