I'm seeing no lack of people on Shiva at any hour of the day.
As others said- you're not going too get a party in ronfaure unless you have a friend that wants to team up with you. you can get from level 1 in ronfaure to level 20 in the dunes in a matter of hours. Use an XP ring to help speed it along, or wait for another double exp event.
Even in the early days of the game, you didn't usually party below level 10.
