Thanks for the compliment, PegLeg, but I'm a hack. I do experiment, when I take pictures, with f-stop, lighting, and speed. What you may perceive as a good picture may have been just luck and you're only seeing 1 out of 50 I took.
My DIL-1 actually did all the research on DSLRs and found that on the high consumer end the Canon T1i (now the T2i) was a good value. We had a bias though towards Canon in that we already had SureShot 600s. It's a prosumer level. You can treat it as a point-n-shoot, or you can go full manual mode. (Or in-between) A lot of plastic. I'd make sure you take a regular lens (~18-55mm) and one telephoto (~55-250mm) and if you can afford it and don't mind more weight something up to the 400mm range as well. I think SD (SDHC) memory cards are the way to go. And don't scrimp on cards for the trip. Take lots of them. Then shoot lots of pictures. Where others shoot 10 shots, you shoot 100. Change aperture, white balance, shutter speed, w/ & w/o flash.
BTW, we still use our SureShot. If you're into programming at all, there's a hack of the Canon firmware, that let's you program the camera in BASIC. Other's have already written programs you can download to do 3D, stopaction, motion sensor and other functions. The nice thing is you can turn the hack off or on and it doesn't hurt you camera.