Simple hairstyles for a summer vacation : Beautiful woman.

Mac Asked: Simple hairstyles for a summer vacation?

This summer I am going away to Spain on a study abroad program with some other Spanish speaking kids from my high school. I will be staying at another family's home with a friend of mine and I am really excited! My makeup routine is pretty low maintenance: in the summer I wear a moisturizing foundation with SPF and waterproof mascara (sometimes eye shadow and eyeliner if I'm going out for a night). My hair can be pretty finicky at times though, so I was wondering if you had any quick and simple techniques for hair in the summer? My hair is quite long, fairly thin, does not have many layers, and naturally very straight. What are your go-to hairstyles? Any tips for quick makeup as well? Please help!