After doing a search, I guess there is no general seat map available for BD's A330-200 (a la seatguru or seatexpert).

According to my booking on ual.com, it looks like reg econ starts at row 20, is that correct?

I'm most interested in an outside view, is row 20 near the wing leading edge, or further aft? If there's no decent view from the first couple rows, I will take a seat much further aft, say the mid-30's.

Finally, how is the exit row seat, row 28? I understand there's a window there and open space in front of you (but narrower seat since tray table's in the armrest), but what about the view? Wing only, or do you have a decent ground view?