Ryan, I talked with a gentleman parked near me at the rally, he ran his coax through the slide seals near the entertainment center. NO drilling, he showed me the special cable he used, it was flat so as to not interfere with the seals too badly.
The guy I talked to to was using a We-boost Connect RV 65 set up with "mixed" results. By that I mean he told me some times he gets good signal and data results and in some areas he gets a good cell signal (talk) but not such a good data signal. He claims it varies quite a bit depending on where you are. At Elkhart Campground (on Verizon's system) he told me his data signal "stunk".... whatever THAT'S supposed to mean.
Dan