Hi - Just thought of a map tip for you...
The Passporter has great park maps. I really like the fact that they show the walking times between different areas of the parks. I took those maps, made a color copy, and then took the copies to an office supply store and had them laminated. They were 8x11 sheets, which I thought might be too big to handle at the parks, but they slipped right into my backpack. I also packed in a mni-Sharpie. These ended up being wonderful on the trip. Because they were laminated they never got wet or dog-eared, and we used the sharpie to note show times or places we had already been. I've used them on three trips since!!
The Passporter has great park maps. I really like the fact that they show the walking times between different areas of the parks. I took those maps, made a color copy, and then took the copies to an office supply store and had them laminated. They were 8x11 sheets, which I thought might be too big to handle at the parks, but they slipped right into my backpack. I also packed in a mni-Sharpie. These ended up being wonderful on the trip. Because they were laminated they never got wet or dog-eared, and we used the sharpie to note show times or places we had already been. I've used them on three trips since!!