One of my faves. Only real weak bit is the ramp and the paragliding jump, could have done something more interesting there. Not a fan of cannon / paragliding in MK in general.
I like the jump in Royal Raceway.
The sense of scale, the garland arches, the birds scattering at the last minute... and then of course the petal-covered quicksilver lake dotted with swan boats, the view of the castle and the runway emblazoned with the crown insignia. Sounds cool, too, with the ringing church bells as you pass under the arches. Also, the hot-air balloons change position from one lap to the next, so they can actually get in your way if you maintain the same flight trajectory. :-O
Just a wonderful course. Probably my second favorite in the game... My overall favorite being the exceedingly pleasant Animal Crossing course with its four seasons.