To be safe, here's what I suggest.  Write the reviews on a word processor program right away.  Send one in, and when it is approved, do the next one, and so on until they are all submitted.

You should get the days for all of them.

Swim

each review must be  "a visit that took place within the last three months".  If you are planning on doing any older than mid August you'll be wasting your time.

I'm not exactly a newbie, but thanks guys for the info

all the sessions occured with the last few weeks

I've submitted multiple reviews on the same day.  I've always gotten full credit for each review I've written.  You can look at the number of approved reviews I have and when I submitted them.  I currently have 95 days of VIP credit.