We're going to DLR in July and are planning on getting 3-day hopper passes. We've just found out that we have the opportunity to share my sister's timeshare near WDW in December. Is there any chance the tickets can be used at both parks (does DLR even have non-expiring tickets) if we buy say a 5-day hopper pass? We weren't planning on going to WDW so soon and need to save money!