Congratulations... But I've done this three times at Goodyear and Surprise MVD offices over a 12 month period. My experience just the same as yours in the polite and helpful department. Walked out titled and plated and OHVed.
Problem is they made it clear three times from three different staffers over a year period that PRIMARILY OFF ROAD means direct travel to an OHV area... nothing more. Friday the 7th I'll be making the Surprise MVD VERY aware of their ongoing mistake... and the money they charged me that I should never have paid. About $250 to date.
Polite but firm will be my approach.