Ivdu: It all depends on if it’s a Psik Reisha or not. Many water fountains are. Some are not. I have yet to see a refrigerator where the motor turns on within seconds of the door being opened, every time. It might exist, but I don’t think it’s common.
Twisted: In the M”B with R’ Nebenzahl’s footnotes, he quotes R’ Shlomo Zalman that that was Shayach in the M”B’s day when everyone could handle black coffee and was used to it, thus adding sugar or milk was an unnecessary luxury that was Assur before Davening. Nowadays when people are so used to sugar and cream etc. and can’t handle black coffee, it’s okay to add what you usually add because that’s now an integral part of the coffee, not an unnecessary addition.