CM's are going to be required to wipe down surfaces "often".
Also there will be hand sanitizer at the entrance and exit.
I doubt it will be closed but I do wonder if it will only accommodate guests in the same party.
Not sure what that would mean for single riders.
I worry for the cast members who have been trained to say the single most important phrase in all of WDW, "Please fill in all available spaces." Every ride vehicle will be disinfected between rides and I'm guessing they will not put multiple groups into smaller ride vehicles.
No, when it opens it will open completely. Why not... If the virus is still around it will only take one day for the virus to have spread to every location in the parks. The risk is the same no matter where you go in a crowded place. All it will do is change what you bring home from WDW or Disneyland as a souvenir.
Touching contaminated surfaces will not give you the virus. Touching your face after touching contaminated surfaces just might give the virus a chance to enter your body. Solution don't touch your face until after you wash your hands. Second thought after seeing how many people don't wash their hands after using the bathrooms at WDW, we are doomed.