This is great advice, and I give it often myself.
Personally, I don't have to worry about getting myself "up to speed". My camera learning curve is fairly short because one of the things I teach is photography /photo journalism, and I already own so many cameras that I'd be downright ashamed to admit the total number . . . including older models of the little Cannon I bought today . . . still, I couldn't lay my hands on my current favorite point-and-shoot -- it's probably in my cabinet at school -- so I justified the idea that I just had to have just one more! This one's purse-sized and takes AA batteries (I find that style more convenient since it's easier to pop in new AAs than it is to leave the camera plugged in to the wall for a couple hours). I will give this one a run-through quickly (and get a couple pix developed) to make sure it's not defective in any way.
I'm kind of iffy on whether I'm going to take a digital SLR along. I keep going back and forth on that subject. I own four of them, but so often they end up just staying in the car. Though I take BETTER PICTURES with my "good cameras", I take MORE PICTURES when I have just a point-and-shoot.
My kids are 12 and 15 -- the perfect age for this trip -- and I do expect lots of great shots of them!