There are several commercial products available that you can run in a hot tub to get rid of the buildup in the pipes.
Yes, unless you "winterize" it by blowing the pipes free of water before the cold sets in. You should research exactly how to do this on a hot tub website like the one below
Probably because the hot water pipes are right behind the front wall of the tub.
NO, it will not freeze.
Install anti-hammer arrestor in hot water line at tub. It should help.
Hot tub covers can have long lives if they are cared for properly. Hot tub covers are mostly affected by dirt and sunlight so keep it clean and perhaps put a tarp over it if the hot tub is in direct sunlight.
A lime juice tub was a ship that served lime juice to prevent scurvy.
1. Superchlorinate to get rid of bacteria 2. Use a decalcifier or Swirl Away
If the pipes weren't cracked from the water freezing and expanding then you could be ok.
THE HOT TUB IS TO RELAX
You use a hot tub cover after the hot tub has cooled off. Using it while your hot tub is still warm can cause your cover to break.
for a luxury hot tub it is 15,000