You'll have to excuse me for being a bit teary eyed, but I actually asked about this same question of the late Fast Eddie (RIP). Wans't here on TER, but what's the dif. He spoke a bit over my head (too techie for me at the time I think), but overall some appreciated info.
Don't think you need a camcorder per se, one of today's digital cameras should do fine. The one I got years ago did pretty decent video and I'm sure nowadays the quality is much better. Hell I just saw one that did 3D which might be wonderful if your model is, um, very 3 dimensional. Okay, I mean she has big tits, there I said it. You could always borrow a camcorder from a retailer. If it's that important just use the camcorder for your event and return it once you're done. One, please keep from getting any fluids all over it. You think its a stretch, but you'd be suprised depending who you're with. Not everybody can contain themselves. Second, make sure you remove the video before it goes back unless you wanna give someone a freebie. Now before some scoff at the idea, early on I did this, but to my credit I did go back a buy another shortly after, it just recorded on memory card as opposed to tape (ugh). As for the tripod, even if you just use it for the digital camera its worth it. They're cheap and some in different sizes and collapse easily for transport and unless you're gonna do a POV thing (and its harder than it looks), you aren't stuck propping it up somehow on a table or something. The only other thing I can touch on is lighting. If the room your in is too dark, it could be a prob. Of course, again today's cameras are kick ass, including operating in low light.
Well, if you aren't gonna use a camcorder ever again, just go for a decent digital camera that does nice video, a good sized memory card, a fully charged battery and small travel tripod and you should be good. An iPhone might do in a pinch, but an iPad would be a bit awkward, but if your considering using that, then less than a camcorder should do. Personally, I don't think I would be comfortable with a camera person in the room, but that's something outta my range.
And most importantly, you should be sure you've got the lady's okay to save the memory of your visit. Don't piss anyone off please.
Well, I don't know if any of this is of any value, but it's free. As for me, like I said, I'm reminiscing.