My sylist cuts my hair dry, and then washes my hair. Sometimes I point out a curl to her if it's out of place.
It is true that the hair can dry differently, especially when you style it yourself, and then the curls will be out of place. I think it's perfectly acceptable to call and ask for a touch up free of charge. But most devacuts are a little uneven at the ends, if only because the curls are different. You may find you just prefer wet cuts.
I also agree that specifying getting your ends cut so it looks nice curly and straight is a good idea.