Babs, do you have a preference on cabins? If portholes are fine, you need to book Cat F early. If you want a starboard balcony, you need to book early. This is just my impression from past posts here.

Radisson usually allows those already booked to get new specials. This is especially true prior to final payment. However, people with good TAs have been able to talk Radisson into the specail anyhow.

Therefore, my recommendation, if you are going to book prior to final payment time anyhow, book early to get choice of cabin. If you want to wait for a special (none right now rest of year on PG), be prepared not to go or to not get your prefernce on cabin.

Although not true for PG, many of us here try to book first day schedules are out on Mariner and Voyager to get the coveted Cat H (or center Cat G on Voyager). We trust Radisson to make us whole if they end up with better specials later.