Considering the size of Waco I would be shocked if they actually had any events there. I doubt there are more than a dozen vape shops in the entire town.
In fact I just did a check and it seems that there are only about 4 actual dedicated vape shops and a few head shops and pipe/tobacco stores that also carry a handful of ecig stuff. You may want to try Great Vapes or Create a Cig, but even those seem to be somewhat limited on their offerings.
If you get the chance to swing up in to Dallas, especially the North Dallas area and the northern suburbs there are several dozen good vape shops to check out.