Holiday Park Campground, Maryland - Rates, Dates, Payment methotds, Discounts RATES, DATES, DISCOUNTS, PAYMENT METHODS: Open April 1st, Close November 15th Hours of the office/store change with the season and day of the week A standard back in site is $43. 50 per night. That rate is based on 2 adults and your dependent children under 13 years. In person we accept cash, check, money order and credit cards -- MasterCard, Visa and Discover. Over the internet we accept the 3 credit cards listed above. Through the mail we accept check (must be received 30 days prior to stay) and money oder No payments accepted over the phone.