Hi,
There are a options for camps if you can find people that are willing to go elsewhere. Shocking, but you may find that people are sick of the dunes and wouldn't mind traveling to another area to exp in just to get away from the dunes. Where as some folks are all about the known zones and the expected exp/per hour and want to stick with what they know, and good on them!
When I first started retail, we'd level in Buburimu Peninsula or Dunes (at that level) depending on how many parties are out there. I didn't even know about dunes being a thing until I changed servers from Odin to Garuda in all honesty.
12-19ish Buburimu Peninsula and target: Snippers, Bull Dhalmels, and Goblin/Shoal Pugils for example. There is also a small beetle camp in Sauromugue Champaign that we'd often hit instead of the over camped lake in Qufim. The camp is what I actually used to powerlevel while I was seeking in Qufim.
My suggestion is to check out some XI exp guides for ideas. My favorite is using
http://campsitarus.blogspot.com/ but you may find some on BG, Alla or even Somepage. If that doesn't work, perhaps you can check out the WIKI field of valor to get an
idea of the level of the mobs in zones and base your party off those mob levels. Some of the guides may not be the sweet spot for exping based on your party make up or other exp factors, but don't be afraid to go check out or become acquainted with other lesser used zones. The alternative is fighting with other parties for mobs and slow exp anyways.
Go forth and conquer.