This Cache has an optional theme to it and this option is totally up to you if you want to take part in this extra activity, it is not mandatory and in fact you do not have to go any where near the Swing in order to get the smiley.
Once at the trail head or on the way back from the cache)
I would be thrilled if you took and posted a selfie of you or your group sitting in the Swing.
That part is optional.
As far as the Cache itself, getting to GZ is pretty straight forward especially if you take the trail from the trailhead, it will save a lot of bushwhacking.
When I placed the cache the ground was moist and a little mushy in spots, so depending on the time of year it may be drier or could be wet.
Please return the cache to the same spot that you find it, which is well hidden.