A lower than 20 party will be able to do things on east but they'll be pretty limited in where they can roam er... roam = fight stuff
Basically it all depends on how good you are, how well you fight together, and the balance of your party. I was in a party of 2 level 9's and 2 10's once that tore up Dregar
![Wink ;)](https://forums.layonara.com/Smileys/default/wink.gif)
but we were limited in where we could roam too.
Moral of the story, if you at the bottom ends of those ranges, be careful!