Now that you have had a "break" - you can be the "spoil parent!"
Do something out of character (ice cream at 11 p.m.) when they come home. Just be the GLAD TO SEE YOU, let's break a few (small) rules! kind of mom.
Kids know when you really miss them, and instead of making it a misery for them (to go) make it a holiday (for a few hours at least) when they come home. Just my .02