They ended up canceling at the last minute, sigh. They gave a really lame excuse; this was actually the second weekend in a row that they've done this. If the meeting ever actually occurs I'll update this topic again. Sorry everyone.
You've been dating their daughter for 2.5 years, you're now engaged to her... and they've canceled TWICE to see and meet you in person? How busy are these people?
Sorry to say this OP, but these two have no respect for their own daughter, let alone you.
They seem socially inept and of course racist...
I have no idea what to say, but I wouldn't even want to live near these parents, they could try to manipulate and slowly fuck with your fiance's head, or at the least: annoy her, make her miserable any chance they get. (Canceling out on meeting you, being one of those manipulative tactics) My advice is, as soon as you get married, if you have the means, move out of town, don't live in the same town or even the country as the parent's. Separate yourself from them as far as you can.
They seem truly bad people( seed) I say out of sight, out of mind.