We'll be doing a 4 night
Disney cruise and 4 nights in WDW this summer. We made reservations 18 months out for the cruise. I've been putting stuff away since!

New t-shirts, laundry detergent samples (from Target), baggies,.... stuff bought specifically for the trip that we won't be using until then. If you actually start packing now, I'd be sure you had a detailed list of what you have packed.