I did shake my head at your typing style and how you are butchering the language. Of course I am saying this with love, ok? As far as people doing their thing, I couldn't care less.

I think it’s horrible, but alas is legal.
IMO, There are only two places that should be done. In the home and at church. If I saw it, I would complain and ask for a refund and leave (I have never witnessed anything like it, ever.)

Sometimes people can’t see the hypocrisy of what they are saying. I would bet my life on the people commenting below would change their answer if a family of 8 Muslims threw down prayer mats and started saying evening prayers in a restaurant. Or a family of 8 covered their heads lit candles and did a Shabbat? Perhaps a group of Satanists could bring in a pentagram and say a prayer to Baphomet and dedicate the 3 course feast before them to his image.

If any of the above happened I am sure no one below would say - “i’d Ignore it, it’s their right.”

The answers below show our tolerance only goes one way - towards Christians. They get away with things other religious people do not.

For me a restaurant is a SECULAR public place of food and entertainment. It’s not for worship. If you need to say grace, say it before you go to the restaurant.
If Jewish and Muslim people to start doing prayers in restaurants, we will soon find there would be an uproar, and probably a change in the law.

And Christians have the temerity to say they are persecuted????? They are given carte blanche in the USA.

I remember the days when people could smoke in a restaurant and, no matter where I was seated in relation to the smokers, it would always drift my way. That was far more offensive that a group at a table exercising a small ritual that gives them comfort and a modicum of satisfaction that they're allowed to exercise their faith among themselves.

It's their right.

I do nothing. It’s their right to pray.

Nope. Especially when they are loud.

They really do bother me so I bother them back.

Last few times time that happened I LOUDLY struck up a conversation with the person/s I am with including:

"Can you believe some people are so childish they actually still believe in an invisible magic sky daddy? When will these children grow up and realize, like the tooth fairy, such silly beliefs have no foundation in reality. I mean really, faith, belief without evidence, as a methodology to establish truth, what kind of a fool uses faith to establish truth? Can you imagine being so deluded? So gullible? etc. . . . the person/s I am with are usually not happy (scared - thinking they will be beaten up)). The theists are usually equally annoyed with my vocal analysis but they quickly become less noisy in the god affirmation after hearing my analysis of their behavior. On one occasion a person from the other table came over and we had a fun (seriously I had fun) discussion about their faith based belief system. He left with his tail between his legs.

I tend to focus on what is happening at my own table because watching some people eat is tantamount to slopping hogs & it just turns my stomach. Unless there is a big production going on, it doesn't phase me.

Yeah, it's none of my business as long as they aren't like super loud or asking me to join.