Please have patience is the correct sentence.
yes
would you pass me the sugar please
The proper form is "Please spare me from..." or simply "Spare me your..."
As part of a sentence, "what your plans are" is correct. For example, "Please let me know what your plans are" is a perfectly good sentence. If, however, you are asking whether "what your plans are" is a correct sentence by itself, it is not. If it is intended as a question, it should be "What are your plans?"
Yes, it is typically a word that we use to politely ask someone to do something.
Yes, that is correct.
The sentence should be: "Please keep this door closed."
He tried all his teachers' patience.
The correct grammar for the sentence is: "Please note that this letter is merely an inquiry regarding your interest and availability."
Nope. The correct way would be Who wants me to about them? Please raise your hands.
yes
are unknown
yes its correct to use thank you for your assiduous patience
would you pass me the sugar please
No this sentence is not correct. Its not that clear who is doing what in your sentence so its hard to give a correct sentence. stipulate means to set down/specify/insist upon In your sentence the 'request' may stipulate some thing. The person 'I' would comply with a request. So maybe your sentence should be: I will comply with your request, please forward the documents for review.
No.
Please compose a complete sentence.