We will be off site in May - It's hard to pass up a week of free lodging even if it is off site- Is the time frame for calling for Character meal reservations different than when you stay on site?
You can make reservations 180 days in advance, even offsite. The only difference is that onsite guests can make all their reservations at the 180 day mark for their trip (up to 10 days), where offsite must call 180 days from each reservation.