So a couple weeks back I had a memorial weekend party. My son, daughter, a friend and wife and step sons parents and siblings. The party went great, I bought a whole Ribeye loin, corn on the cob, salads etc. My daughter brought a pasta salad and the in laws brought the wife a vase with a flower and some popsicles. I had horseshoes and knife and ax throwing set up for activities plus everyone liked hanging out with the horses. The problem came up when the party was over. I was outside, the wife said later that walked in on the sons girlfriends family raiding the leftovers, in the drawers and cupboards and refrigerator. She said that when she walked in they suddenly looked like they got caught and quickly put the food they took in a bag. The wife didn't say anything to them but I have never experienced this before and not sue how to proceed with them. It was the first time we ever met them. Is this normal nowadays? Did I miss a memo or something. Give me your opinions on this.