Our retreat will be held at the beautiful Calvary Chapel Conference Center in Twin Peaks dates from July 20th - 22nd and. Total cost is only $160.00 and requires a $30.00 non-refundable deposit at time of sign up at the Info Center. Balances due June 1st. Sign ups at or after June 1st will require full amount. Cancellations after June 1st will lose their balance.