They may not be too bad when you're visiting since it will be early May. Long sleeves and a head net are pretty standard. they go for the back of your neck/behind your ears, eyes, ankles, etc unguarded soft spots so be sure everything is tucked in well. You may even want gloves. They're mostly just annoying when you're outdoors but the pain and inflammation is the worst once you're home and trying to get to sleep. Depending how you react to their bites you might need antihistamine to keep the swelling and itching down. A menthol/camphor rub is real soothing if you swell up bad.