It totally depends on who the guests are, and what the situation might be. I have brought strippers to a bachelor party that was otherwise going to be lame. That was a hit.
I suspect that if a homeless Vet was invited to one of my parties, I would be OK with it. Maybe someone's aging parent that the spouse just passed, I would be OK too.
If it's just bringing another mouth to feed, probably not.
With our guy, what really got him timely was when he missed out on the free appies a few times. We would rave about how great they were.We had a friend and this guy would alway always show up late to everything, this went on for a few years and finally the group of friends just started whatever it was after a normal delay of 10 minutes. Once he showed up a few times and realized we didn't wait, he started getting faster