Heber
Heber is a nice place to visit.
Provo Canyon is OK to traverse, I simply stay a bit higher and on the leeward side depending on wind direction.
There is rising terrain on both ends of the runway. If the winds are high enough, they can create some interesting bumps in the pattern. If they are out of the SW, you can get some waveform downdrafts from the hill to the SW just as you are climbing out and turning crosswind towards the hills.
FBO is nice. Don't know what you are planning to do while there, but it could be pricey as Heber is a destination for the Park City goers and the market drives the costs.
You mention this is a long XC (and first). Please PLEASE file and activate a flight plan and use flight following if they are able. As you approach terrain, you will have to stay high to keep in radar. As you approach Provo Canyon, they will likely cut you loose as they can no longer see you as you descend. You will likely be on your own for traffic avoidance at the mouth of the canyon. Start talking on UNICOM ASAP.
The weather has been dicey this week. TS and RA have been abundant. Temps are dropping. This weekends forecast is not looking good for mountain flying.
With the lift, gliders are abundant, especially over the Cedar Valley to the west of Utah Lake and Heber.
Let me state again, file and activate a flight plan as you head to Utah. Have a good survival kit with rations. Be prepared for alternates (U77, KPVU, U14).
Have a fun trip, stay safe!