Re: more religious issues
In my dojo we bow to everyone. The teacher, the sempai, the students, bokken, pictures on walls...you name it we bow. It is almost like we do it to acknowledge each other...a very formal howdie i guess.
however, i visited a dojo last month where they bow three time and clapped and bowed again. That was too much for me. I just bowed... and no one really cared.
So what I'm saying is that you shouldn't do something that makes you uncomfortable... no one will think you are weird if you opt out. Just don't be a buzz kill and let it effect everyone's training experience.