I also have nine corian countertops on order. Here are a few early progress pics. More to follow.
Cabinet doors with unfinished teak veneer applied.




Here is a pic of a partially finished cabinet door. I am finishing with two coats of clear epoxy resin followed by three coats of varnish and probably a final coat of semi gloss varnish to reduce interior glare.
All of the cabinet faces will have teak applied as well. It is time consuming but the end product should be great...and a huge improvement over the white Formica laminate.

As far as applying teak veneer to interior wall surfaces, I have removed vinyl and belt sanded. Wipe with acetone and apply teak veneer with same high quality contact cement.
The teak veneer sheets should be sequence matched for cabinets for best results. The cabinet faces should be covered with the surrounding areas of the same teak veneer sheets so the grain flows from the cabinet frame across cabinet doors.