by dacy17 » Tue Apr 03, 2012 1:05 pm
If your in laws invited your whole family, including your children, that was a reasonable and very nice invitation. If three weeks in a row with your in laws is too much for you, you should plan day trips on your own or something. You don't say how old your kids are, but if they're anything under high school, a trip with the in laws is a reasonable request to make of your children even if they grumble a bit.
If your in laws did not invite the kids at all, that's kind of odd, and I think your wife could reasonably refuse such invitations, especially if they come every year.