You don't need 8-person parties, either. I've done a few 4-man parties with my LS and it's still amazing XP and a lot of fun. You can't do it at all levels but most of the time you have multiple options for camps in case you can't get a full party together.

I help PL members when they are in a leveling slump (there's a few low and mid level ranges that are just awful in regards to camps) and try to help out those that can only play on weekends to get them caught up ASAP. It's very useful and it will be nice to be able to help my brother and sister out once the ps3 version arrives.