@2airishuman : Thanks.
@Jack Hammer : (&/or all)
Might you by chance know of any Chicagoland hydro places that might deal with folks like me directly (not coming with a truck or trailer full of tanks) w/o going through am LDS? (or is that a PM kind of question?)
How about VIS, is that always through an LDS or do some of the actual hydro places also do the VIS?
If they do, just as VIS or only in conjunction when they also do hydro anyway?
And:
Is it correct that a VIS is actually not needed in the year a new hydro was given --- or am I mis-remembering or thinking wishfully or not bowing to "in theory yes, but in practice to actually get a fill it's different ..." - or?