The acquisition of media
can be broken into 2 sections: technology and workflow and should be governed by a usage / privacy policy.
The Technology:
Photos for the web need not be 12 megapixels and captured on a $1300 Nikon D90 Digital SLR (If you have one lucky you). Web images are best when downsized, it is faster for uploading and viewing and removes the temptation to photoshop.
So what do you really need, anything 6 mega pixels and above will do fine, web photos are not the same as print material but at a pinch the 6meg will do for printing as well.
A built in flash will prove invaluable at evening events, make sure your card reader is a standard format like SD so it can be read in many machines, if you are really in a rush the new WiFi SD cards can make transfer incredibly simple.
Batteries, and SD Memory cards - get a few, for a normal day you could shoot 2 cards worth and being stuck without charged batteries will cause no end of problems, a 6 pack rechargeable AA batteries and 2 x 2gig memory cards should set you up this should cost less than $70.
Now the camera, a simple camera can do wonderful things, the technology is improving each month so below are three simple cameras, I quote B&H Photo Video as they have superior service.
Panasonic Lumix DMC-LS80Kodak EasyShare C913 Digital Camera Sony Cyber-shot DSC-S780 All three were listed at time of printing as under $100. If you will be running around camp to shoot you may want to consider a
monopod this can help if you end up with a Digital SLR with some weight to it.
Many Video cameras also have half decent stills capture, and even some cell phone have reached 5 megapixel. It is about getting the photo in the moment and lots of them.