I am thinking of going to Assateague State Park for a few days of camping and then finishing out the week at Ocean City. I can be very flexible on the dates, so it really depends on the answers to these questions: What is the weather like in May and June? Is it too cold to camp? When do things open for the season in OC? We have a toddler so I want to go when things aren't too busy, but I don't want the weather to be too cold, or too many things to be closed. Thanks!