1. You slow your team down when playing sports.
"I'm sorry for running over you when trying to get to the ball,are you OK?"
"I'm sorry for running over you when trying to get to the ball,are you OK?"
Because the hosts know that you can chat politely to anyone.
"Hi, excuse me, sorry to bother you..."
You could flag down the bartender, but they're clearly busy and you don't want to interrupt.
It's fine. I can just eat around the cockroach. No, no I'll send it back. "Excuse me, would you mind swapping this please? Thanks."
"I understand your opinion, and thank you for expressing it, but if you'd allow me to continue..."
It would be polite to tell them. But it would be impolite to cause them distress and embarrassment.