this is a fact here and something that took me longer than you did to notice. There is a certain expectation of appearance among the wealthy or professional, one is having a very nice car or an suv, dressing well with wrinkle free clothes, nice cologne and groomed well(for those with hair of course). I'm sure this is one reason I haven't made friends as I had hoped at the local golf course.
My experience here is that:
-folks in business in the DR are very "first impression" oriented. Pass that test and you have a foot in the door.
~and~
-folks want to know who you know, and who your family is.
Much of a first meeting centers on these two topics. Understand that, and do NOT rush into talking business.
I've been in intro meetings with Dominican partners where, upon leaving, I'm like "what was that all about? Nothing happened!!!" And my partner is saying "Great meeting. Couldn't have been better. We're in, we'll get the business." And we do.