I've been told that old saw about "the model doesn't know the wind is blowing". Horse-hockey. My planes are very enlightened and know very well whether it is windy or not. If you can't tell you're not flying a very sensitive model; especially crosswind. I have to compensate a great deal on windy days for symmetrical maneuvers like I would have with little wind.

Practice with 25 mph on the sim and the 10 mph days at the field will be cake.