I want to book a trip to Efteling, but not sure when to go, likely to be either May half term or later in August. I think I have read may is quieter as there isn't a local holiday then ? but would the weather be better in August (as much as you can predict such a thing). Also in terms of travel what is the best way ? DP does get seasick so probably a shorter crossing or tunnel ? But we'd take the car.