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

I was gone 15 weeks last year. I was in a lot of National Parks that had no hookups but waste disposal on the way out. When I was in places with hookups, my 25 foot water, 30 foot 30 amp and 15 foot sewage were plenty. The only thing I was short was cable hookup. Garage sales took care of that this year. That's all I plan to carry this year.