Seven Maples Campground, New Hampshire - Rates, Dates, Payment methotds, Discounts RATES, DATES, DISCOUNTS, PAYMENT METHODS: Standard rates: Tent sites $27.00 Water/Elec. Sites $30.00 Water/Elec/Sewer $33.00 Holiday weekend rates:(3 nights) Tent $85.00 Water/Elec. $100.00 Water/Elec/Sewer $110.00 Group Rates: (subject to group terms) 10 to 20 sites 15% off standard rates 21 or more sites 20% off standard rate