My husband and I have owned at Divi for about 10 years. I have seen an increase of beach vendors there in those 10 years but they generally disappear when you say no or simply don't even look at them.
As for Darlene at Divi, I swear, she must be someone at corporate's daughter or niece. She is pushy and I try to avoid her at all cost. she will ask us on a regular basis when we are there if we have had our presentation. Once, she even got us in for the presentation but didn't remember us for the remaining week and half we were there.