We carry 2 10' hoses. More times than not we use both. We've stayed in $100/night sites and $20/night sites, it doesn't make a difference. Our experience has been that the newer parks seem to have hookups laid out a little better. We have 2 25' fresh water hoses, a 50' 30 amp extension cord, 2 25' coax cables and 2 10' sewer hoses. We usually have to use one of them on every trip.
I consider Fort Wilderness at Disney World one of the nicest campgrounds on the East Coast, probably the country, but their hookups are spread out along the length of the site. Electric and cable hookup is usually at the back of the site, while the water hookup is at the front of the site. Sewer is usually somewhere in the middle. I usually use at least 2 of something every time we go to Disney, usually twice a year.
-Michael