Which entrance to take to FamCamp....Roy Gate or South Gate?

I have a motorhome that is 12ft 8in high and pulling a dinghy.
I will be coming north on I-15 from Salt Lake City and need to know what exit to take for the FamCamp.

The directions here say take Exit 338 and take ROY Gate but seem 4 miles further north than I need to go.

I see I can get off on exit 334 and enter the south gate to the FamCamp easier as long as the gate is high enough to accomodate my motorhome? (12'6")

Can anyone help?

Thank you in Advance
Iggy USAF E7 Retired

Unless things have changed, you are REQUIRED to take the Roy Gate. Large RV's can't enter through the south gate.

Thank you. That's what I needed to confirm.