Place it appx 42" (aff) above finished floor. Be sure it is depth is no more than the depth of the tank top so you do not hit your head when standing up
You should throw it in the bowl. That is the correct place for it, just not huge clumps of it.
In a table setting the highball glass is placed ABOVE the knife, not on it.
A building supply or good hardware store should be able to sell you a toilet cap to bolt in place of a toilet with a good gasket to keep out smells and avoid back ups.
yes it fine to closed the door just make sure the statue in above 3 feet from the floor.
Broken toilet flange. Toilet flange bolts may be loose.
The knobs on the bottom of the toilet hold the toilet to the bolts that in turn hold the toilet in place on the floor.
all the above
In the toilet.
You should search from the same place that sells sauna doors
You place the water glass on the right of the plate in the "corner" of the place setting.
The toilet is 3 or 4 inch and the shower is 1 1/2 or 2 inch. You could reduce the toilet to 2 inch, but it would never flush correctly or be of much use. The current toilet drain has no trap in that section because one isn't needed. The toilet itself is the trap. If you are using existing waste lines, they should already be connected to the vent stack. If you are adding lines, connecting to the existing stack is fine as long as it is above the last drain.
Toilet