@ cmegown,
Here is something you might also find really useful. I use it for my nutrition practice. TuneNGo.com and works awesome.
My members have a very very easy way to register (I understand you don’t want them to register, but how else can you get the contact information you need) and yes you can take upfront payments if you desire for your appointments, which takes the risk out of your business.
best of all, it loads right on your wordpress website with a small piece of code they provide. Anyway, works very well for me, and I love it. Free is a great price these day! ??
Best of luck!
-M
