100% - absolutely so. And so easily done.
Knowing when to Wai is not difficult nor is returning a wai, no matter who offers it to you... for me, being older than dust, it is mostly just a matter of returning a wai...
What I don't like is shaking someone's germy hand as Westerners often do.. I understand that it is polite to cover your mouth when coughing, but then a few minutes later, shake someones hand?? Not for me.