"The girls are very tired. All the swimming and friends and stuff has worn them out. I'd love to just let them lay around but I only have two more days to my final vacation week with them and I don't want to feel I've wasted the day."
Um, it's not all about YOU! But, speaking of you, you need to do lay around too. The girls will not be enjoying themselves if they're tired and you're running their butts off! The day is not wasted if you're all doing what you need to do and rest is also part of vacation. Chill out CTH!