We tend to be very hard on all our cameras, but especially our point and shoots. I hate to admit, but in the past few years I've gone through 5 of them
Now I only use a bigger digital SLR because of the fastness of startup and lack of shutter lag between the pressing of the shutter release and the camera acutally taking the picture. Something that I hate in digital point and shoots.
If I was to buy another point and shoot, this would be the model especially for the RV. Its a Pentax Optio W30 Digital Point & Shoot and at 7 mega pixel it's way more than you'll ever need for just posting pictures on the computer.
It only has a 3x opitcal zoom, but does have macro capabilities which makes a big difference.
The real seller on the camera is it is fully waterproof and dustproof. This means if you're ever hiking or boating, there is no need to worry about the camera. When it gets dirty, just wash it off.
At only $235, it a bit more than those you were looking at at Wal-Mart, but the little extra price is worth it in the extra features.
Here is a link to a site that has them in stock, and B&H is world class for their service and returnability.