I called through the Costco travel number. Even though the 2009 trips are not up on the Costco website, they are able to book the new trips and do give the $500 cash card for booking through them. Their number is: 1-877-849-2730. The lady on the regular ABD line said that if I converted it to a Costco reservation today, I would keep the early booking discount. So, I just called the Costco line after I finished. The wait time was about 20 minutes on the Costco line. Otherwise, it would depend on availability.
It appeared that not all agents were familiar with the loyalty discount. The Costco one that I talked to had to go back and add it back in after she had converted it and hadn't added it.
It appeared that not all agents were familiar with the loyalty discount. The Costco one that I talked to had to go back and add it back in after she had converted it and hadn't added it.