Yes. I’m Jewish.
I’ve been to Palm Sunday mass at a Catholic Church, and a few weddings, baptisms, and first communions too. I stand up when asked, but I don’t kneel. One friend, her priest was very funny at her wedding.
I’ve been to a Greek Orthodox wedding. It was good. The priest seemed happy and he described the different traditions like a Jewish wedding.
I went to a wedding that was some sort of born again Christian something (I think Baptist) where the minister put into the vows for the bride to repeat she would be “submissive” when she specifically said she did not want “obey” in the vows and the minister had agreed. I guess he thought he was slick or maybe he was obtuse. The bride was a very good friend of mine, and she was pissed. There was an audible gasp in the gallery when he said it for her to repeat.
I went to a wedding at an Evangelical church in Memphis and the preacher talked about Christianity being the only way to stay married and that people are against Christianity and trying to destroy it. I’m paraphrasing, but it truly was ridiculous, it was not simply reinforcing their faith as a Christian couple. The wording during a wedding was unbelievable to me.
Went to a service at an Episcopal church for an acquaintance who died. I really liked it as far as these sort of things go. Everything was explained, and I felt very welcomed there.
There are a few other examples of Protestant services for happy or sad reasons, plus one social event I attended in a mega church.
Even when I go to a service in my own religion I’m a little lost since I didn’t grow up going to synagogue, and I have a very small family, so there were very few weddings, deaths, or bar mitzvahs. Houses of worship always feel a little foreign to me.