The Venue

Plane

Fly to DEN.  Catch an Uber to the address.  I have one (1) guest room available.  Alternatively, catch the A-line to the R-line to Iliff Station, which is about 4 miles from the house, and get your Uber from there (or convince someone to come pick you up).

Dragon

Give your dragon what it wants, and convince it to fly you to the address.  Please ask your dragon not to land on the house.  If you are being dropped from a height, consider the lake in the community just south of Iliff.  I have towels you can use.

Bus

I have no idea, but I'd start here https://www.rtd-denver.com/routes-services 

Car

First, put your White Elephant gift into the car.  Then get in your car.  Then click that google maps link to the left, and go.  Maybe start your car.  Maybe stop by somewhere on the way and get a replacement White Elephant gift you forgot because you didn't do sentence 1.  Park anywhere on the curb around the neighborhood.  Consider Warren Ave to the north, which has a big ol' stretch of curbs with no driveways.