I disagree..we were there over Xmas..while laying out we covered up quite a few times with our towels because:
A. It was cloudy and cold...low 70's with no sun and lots of wind.
B. I felt that certain areas that rarely see the sun were starting to get burned! I used my travel towel (that I always bring with me) to cover up during high sun times (1-3 PM).
No one was uncomfortable! :-)

