Been waxing for years. I don't have any hair to speak of on my legs anymore, but I still have to do the "bikini" thing. Yes, I do my pits that way too. The hardest part is the small of my back. I started waxing my chest a couple of years ago, I'm beginning to see an effect similar to the lack of regrowth I see on my legs. Might be the hormones. I tried waxing my eyebrows. Works great, nice clean lines! As for my face, I use a safety razor for now. Thinking about electrolysis.
I have heard conflicting stories about he nono. I would say, if you were going to try it, check kijiji, don't buy a new one.