I remembered another one but not directly on me as host (and yes, in laws). MIL is a feeder (bless her). SIL has all kinds of issues with food. this is not a great combination but because MIL doesn't have space to host, they jointly host things at SIL's house. The usual arrangement is that MIL will have purchased and provided all the nibbles, starters, sides, drinks etc. SIL will have made the main course. Which will be lasagna. Maybe a small salad on the side. In the summer, she MIGHT do a BBQ with burgers and sausages.
MIL loves deep fried/crumbed etc food. She also likes to over cater (which, considering the appetites of the men in this family seems reasonable to me - DS, DNs, BIL and DH are all bottomless pits and only BIL is in the slightest bit overweight so they really do need that quantity of food!).
SIL on the other hand, only makes lasagna because she hates cooking and entertaining and so this allows her to get one thing done but she's terrified of calories and fat. the result is that she is not generous with her lasagna in terms of portion size or even just the way it appears on the plate - quite dry with little sauce, stingy on meat etc. IMO this makes MIL's over catering even more reasonable!
The bickering between MIL and SIL CONSTANTLY as SIL complains about MIL putting out more food/heating up more food/ frying more food/ air frying more food and then trying to get people to eat the food. SIL goes on and on and on about no one having space for the stingy portions lasagna because they've had too much prawn toast/falafal/chinese ribs/olives etc.
Then BIL will have MIL fussing around making him plates. He'll be getting irritated. But then he'll consume 2/3 of whatever is on the table in 3 bites anyway.
I find it endlessly entertaining as it's got nothing to do with me and am just the bystander. DS thinks it's hilarious because I'll be telling him to slow down a bit (for politeness sake e- no one needs to see a 6ft teenager shoving entire spring rolls in his mouth in one bite!
) while MIL is practically force feeding him on the side and he's ALWAYS still looking for more lasagna afterwards.