How Do I - Is it worth traveling to a Dark Sky Site during a nearly full moon?

It figures, but she who must be obeyed is going out of town with the
kids on 7/4. That leaves me the night of 7/4 for as much viewing as I
want...only what, 3 days past the full moon?

Drat!

Assuming the fog clears out, am I better off going to a dark sky site
or simply viewing from my suburban San Diego back yard? I guess the
real question for those of you with more experience is, how much will
I gain by making the trip east?

Thanks for the advice.

Clear, Dark Skies

Mark