If you're gambling on good weather, that's fine... But, if it rains, you're gonna be soaked using a poncho as your raingear and shelter. My experience out there is that when it rains it rains hard, and with lots of wind. The ground's back in the trees is already soggy, the sand is pretty exposed, hard to find an optimal campsite with good drainage. Not the best place to build tarping experience with a small tarp. Unless you're real confident in the forecast, I'd bring a bigger tarp or a tarptent, or something.. Just not a poncho only...