I have heard from several other campers in my AO and they say that when you buy a new camper ASI just have the dealer normally gives you a starter it with hoses etc In the forums experience is this ...
Most give you very basic stuff to get you started. I use the stuff I got as backup. The slinky I only use at dump stations, not for regular connections. The water hose, pressure regulator, and power cord adaptor are in a box for backup