Reluctant Horses?

Reluctant Horses?
Saw this sign is at a local pumpkin patch. Every year they have a corn maze and wagon rides. I guess this year they had very reluctant horses that refused to carry riders on their own unless the horses were tied to the back of the wagons? How else would you describe Wagon Drawn Horse Rides?

Hope you get as much enjoyment out of this as I did.

Thank you,

Cory Murphy
Riverbank, CA