Edit: Seems Abletudo's response describing the way to load parks within TPS is gone or deleted or something....anyway....a bit more info:
Thanks and I know how that works. I can get a workshop item to open from within TPS, but it monopolizes TPS for 20-60 minutes and I want to play the game while it downloads so slowly (for me). Much prefer to be able to download the file ahead of time (like when I am sleeping).
My question is with Steam......when I click subscribe, it actually downloads the file somewhere (outside of TPS). It must be saving it somewhere. Why else would it bother doing that?
If you don't know what I am talking about, click subscribe on a park and then check you steam download screen (click LIBRARY/DOWNLOADS) and you see the park you subscribed to is downloading. If it is downloading it (outside of TPS) and you can't open up what it downloads, that would be a complete waste of bandwidth and time. This is more of a Steam question than a TPS question, I guess.
When you have such a slow connection, you gotta manage it . Not a complaint, just a fact of life.