I have never been in a Aikido dojo where they don't bow.
I have though wondered about the clapping ritual. I never saw this with the early teachers such as Kenshiro Abbe and Nakazono Sensei, it is something we have never done.
Is this a recent introduction, say in the last 10 / 15 years ??
Henry Ellis
http://kenshiroabbe.blogspot.com/