Went round my DM for sunday dinner (was looking forward to a homecooked meal with being heavily pregnant) My DB was there on his own also for dinner. His DP was at home with the dog but expects a full meal to be plated up for everytime. My DM is very welcoming picks DB up and takes him home afterwards as they don't drive. His DP is invited but chooses to remain with the dog.
Abiu to think its really bad manners when invited round for dinner not go but expect a meal to be plated up and taken round. This isn't a one off occassion and happens regularly. If me and DH are invited for family meals we go together.