Was invited by in laws for Christmas Eve dinner weeks in advance. They even invited my mom and grandma. They served us 3-4 day old meat from a dinner party they had days earlier. There was no new food prepared for us including even boiled vegetables being 3 days old. They are wealthy people as am I.
Are we wrong to feel disrespected by this?
No, you're not wrong. It's weird. But it's also Christmas, and in the scheme of things, Jesus is what matters. It's sad though, that inlaws would treat you and presumably your spouse this way. Did your spouse notice?