I remember a few years ago, me and the Missus were invited out by her best friends family for a meal at Fellini’s.
All was good until towards the end of the meal, loads their family members started queuing at the bar (about 12 people which looked ridiculous) to pay for their separate meals / drinks. I thought it was a bit weird in a restaurant as me and my friends tend to just get the bill and either split it or work a fair way of splitting if we have none drinkers etc.
I waited until the end, and ended up going to pay our share + a decent tip,
After paying, the Waitress thanked me for the but said the bill was still £25 short (including my tip going towards the bill). By this point half their family had already left.
In the end, one of her family coughed up the difference.
This was at the time kids ate free as well. There was about 7 of them. Fair enough, don’t tip if you don’t want to, but to not cover the basic costs really wound me up.
Needless to say, I’ve declined every future invite we’ve ever had for similar things. Probably done me a favour in the long run!