If you book two separate packages, each with tickets for that length of stay, the pricing will be higher due to the price structure for the tickets. The longer the length of ticket, the less costly the per-day rate. Each package must be booked with at least with a one-day, one park ticket. You could always try to book the first WDW stay with a longer MYW ticket to cover the days you'll be staying after the beach trip, then book room-only for the stay after the beach trip. It won't be as good of a deal though as if you book one longer stay.---Kathy