You sound like my mother - it never mattered what my father set up for us or how well we behaved - she was always unhappy and said vacation was more work than being at home with us...
I am a single mom - my kids are 17, 12, 7 and 5 - and I enjoy every single vacation... I spend just a bit more on the hotel rooms(so we don't get to go as often) - so that I can have at least one extra room and or a kitchenette - Embassy Suites and Marriot RESIDENCE inns are both worth the little extra money because you get the extra room - FREE breakfast -
I get in the pool and PLAY with the kids - - - The last time we went a few weeks ago for an overnight vacation - we needed a break and I couldn't afford two nights - - - my 12yo noticed that I was the only mother actually IN the pool - all the others were sunbathing on the sides while the kids were alone or dad was in the pool with them... My 5yo cannot swim yet - he had a lifevest, a floaty suit and a kickboard that he take turns with - - - I was looking around at all the other women and wondering what it was like to sit and do nothing - - - then my son came up to me, kissed me and said, "You're the bestest mommy in the world because you play with me!"
Now that's a vacation - he will always remember playing with mommy and I felt like the most special mother on earth...
I encourage you to look at your vacations differently - relish the children and the experiences - savor their excitment - whether it's collecting brochures in the lobby - writing with the note pads and pens in the drawers - taking 5 baths a day (no water bill) - - - watch their faces - embrace what they are enjoying and look at the work as an opportunity to bond with the children and realize just how much you mean to them... Look at trying to find food they will eat as an adventure - make it a treasure hunt and have them play along - - - make it a game - it's vacation after all....