I've been wondering about dressing for the Jewels of Egypt, 10/28 departure, which won't make it to Sinai until mid-November. The coldest element is at the end. I'm wondering what is the best kind of jacket to bring--something that wouldn't be a pain to carry around for 2 weeks in warm weather but still warm enough for the possible climb of Sinai (I'm not sure we'll do it, but want to try). I have bought an inexpensive polar fleece jacket which is light but takes up a fair amount of room to pack. Advice from those in the know would be appreciated. Thanks. [We will be going to Jordan on our own afterward, where whatever jackets we bring will probably get more use than they do in Egypt].