The only time we went in June, it rained the entire trip. It wasn't hot at all. I'm anticipating that it WILL be hot this time. In trying to pack as lightly as possible (and possibly save some baggage fees!), do we need to bring long pants or jeans for June? I'm thinking we won't need them...but I'd like to hear experiences of others. (we will bring sweatshirts, just in case)