On our 02/15/03 PG cruise our group decided to book the F cabins.
1. Price. Any more and two of the couples would not have been able to go and we did not want to have some of us upgrading over others.
2. In talking it was decided that we probably would not be in our cabins that much since the cruise is a high itinery cruise and we would be seeing each other a lot.
No regrets from any of us. It worked out fantastic.