How likely am I to need 30amp and/or water extensions?

I have used extensions for all 3 (water, electric and sewage) at various times BUT not very often. Primarily, when camping at lake with a relative that has a 5'er, we will pull our MH into campsite instead of backing in to put our campers "awning to awning." When doing that, I have to extend both power and water from the pedestal since it is now on wrong side of MH. No sewer connection at this park so that isn't a problem.