Fil AND Mil visit
DH had invited FIL to YDS2 birthday. Normally it would be the weekend that MIL would work, so we figured we wouldn't have to deal with inviting her or not inviting her. Turns out she switched weekends with someone for the 4th of July, so she ended up being at the party as well. I wasn't thrilled about this. However, something shocking happened. Besides being very subdued the whole party, when they were leaving FIL told us thanks for the invite, and MIL said yes, thank you, that was very nice. No sarcasm, completely genuine. I've never heard a genuine thank you in any form from MIL.