I'll add my little worth. Here in this part of Florida we have the usual mix of Fla natives and snowbirds / retirees / "immigrants". My observation is that local GGs use Hon, Sweetie etc a lot more than other women. Guess this supports the "It's where you are from" idea. When Claire is out and about, I do too (not a native, but been here for 20+ years). However, I find myself doing it more and more ... even sometimes in drab (). Maybe this supports Juliette's point?
And here is something I wonder if others who are out have noticed. When I'm in drab and with GG friends who know Claire, I get Hon's" and "Sweeties" too -- it seems to happen more often now that the they know me .