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According to the Mayo Clinic these are some known causes of leg cramps. As you can see alcoholism and dehydration are listed. I doubt that a couple of glasses of wine will cause them, but drinking water right before going to bed may help.
Leg cramps can often be a sign that you're low in potassium. Since apple cider vinegar is high in it, one home remedy suggests mixing 2 tablespoons apple cider vinegar and one teaspoon honey to a glass of warm water and drink to relieve nighttime leg cramps.