I find getting ready to go on holiday innordinately stressful, I do all of the preparation & packing for the 4 of us, as well as all the housework (I absolutely hate coming back to a messy house, plus our landlady's coming in to water the plants, so I can't exactly leave it messy. Anyway, all the work of packing, outdone only by all the work in un-packing seems like too much bother. Sometimes I'd rather just stay at home too.
BUT, all that time with dh, and all the time dh gets to spend with the kids. Plus, you'll have friends there. Honestly, once you're there, you'll forget about all the work & agro - a bit like giving birth I suppose!
If you find you're still not relaxing, or having a good time, then efinitely speak up & get dh /the friends or whoever to chip in & give you more of a break. I always make dh do the cooking on holiday, and make him do more with the kids, because frankly I'm the skivvy 48 weeks of the year (not that I don't moan about it enough).
Also, I find if at all possible to do as much washing (of clothes) just before you come back, then the actual return is much less stressful & depressing that suddenly being confronted with piles & piles of 2 week old dirty clothes.
Hope you have a great time.