Maz, I would not say that. (actually, now that I think about it, I totally would, but I digress) I just see Wifi as a useful item while at a park, but not TV. I suppose if you were with a group and wanted to take some time off in the cabana the TV could be useful, but otherwise I not sure I would get much use out it.
Wifi could be useful for getting traffic updates, planning, and the usual things we need Wifi for. Hell I have once brought a Laptop to the park because I needed to take time off in the middle of the day to process time sheets. (in my case I used my Mifi) But these are short interruptions. TV seems like it would require more of a guests time.