We beach camp and have for 43 yrs. Over those years, we've learned to pre-cook any meals that we could and freeze them to use as ice in the coolers. Try not to overpack, as it will put weight in your boat. And one invaluable thing that I've learned is to make some anchors to tie on all corners of your tent and bury them. Mine are about 12 inches long; you can make them out of plywood or two by fours or something to put in the ground. I also poor sand on them and then water and then some more sand and then more water until the hole is full. Once those dry, it's virtually impossible to pull them out. Like one poster said, do not use the stakes that come with your tent; if some by chance, you have a big microburst come through while you're gone, you will be fishing your tent out of the lake! This happened two years ago to one of our neighbors in the canyon we were camping in. As far as camp spots South lake, I'm not much help; I'm a northern boy . One more piece of advice I have is don't overthink this; you got it! You'll have a great time! The best time I've ever been to Lake Powell is in September. .