WARNING: NOT A TEACHER
(1) Welcome to usingenglish.com.
(a) Whenever you have a question, just ask it here.
(b) Excellent teachers will give you the answer.
(c) Non-teachers like me are currently allowed to give
our opinions. But remember: if I say X, and a teacher
says Y, then Y is the correct answer.
(2) You are confused about apostrophes. So am I.
(3) I went to Google and typed "We will meet in the parking lot." If you
do that, too, you will get some ideas that will help answer your question.
(4) I am happy to discuss some ideas with you:
(a) Here in the United States, many people prefer to use an apostrophe
ONLY when it shows real possession. For example, I think that most
Americans prefer "the employee parking lot" rather than the "employees'
parking lot." The employees do not own the parking lot. The parking lot is
for the employees. Americans also usually prefer the singular. That is,
employee parking lot rather than employees parking lot.
(b) I think (think!!!) that many Americans would simply say (or write):
We will meet at the supermarket parking lot at 6 a.m.
(i) I noticed in those Google results that both "at" and "in"
are used. I prefer "at." (That is, the general area.) "In" seems
to me to emphasize the idea of "inside" too much.
(c) I also noticed that you can "skip" this problem by rewriting the
We will meet at/in the parking lot of the supermarket at 6 a.m.
(5) Hopefully a professional writer will soon answer you -- and me.
Have a nice day!
Interested in Language