It seems that I DO NOT understand how vacation mode works!
I take that statement by @jprspereira to mean that ALL reviews are frozen in time. So, for example, if I had a 5 reviews scheduled in SRS 4 months from now, then 4 months after deactivating vacation mode, I would STILL ONLY HAVE those 5 reviews come up in 4 months!
But then we get the following statement:
I take this statement to mean that at the time @servette activated VM, @servette DID NOT HAVE 800 pending reviews; otherwise why complain about it now after deactiving VM?
So It seems like WK during VM will still accumulate ALL the reviews that would have come up while not in VM which IS NOT the freeze I was expecting per @jprspereira! [OOOPs, upon rereading this sentence what I said can’t be true!] Never the less, NOTE that @servette IS NOT the only one who have made this comment about a ton of reviews showing up after deactiving VM!!!
So can someone explain just how VM works in simple terms that someone like me can understand? Here is an example of what would work for me, assume:
| # of Reviews Due | When Due | Total # Due |
|---|---|---|
| 5 | next day | 5 |
| 25 | 1 month | 30 |
| 170 | 6 months | 200 |
Obviously there would be a LOT MORE reviews between ‘next day’ and ‘6 months’ but this is just an example to explain my point. Also, I am assuming that the SRS schedule would not go beyond 6 months (but so what even if it did, my point of how VM works is still valid).
Given this example, when I deactivate VM, I would expect ONLY 200 reviews to be scheduled in SRS, not hundreds (some people even stated thousands!). Granted, as soon as I do the first 5 reviews the next day, then those 5 reviews will be rescheduled according to the SRS algorithm BUT the total number of review will remain at 200 (unless some of the 5 reviews were Burned). Furthermore, that 200 would remain the same (minus Burns) until I start doing more lessons!
So can someone explain what’s wrong with my expectation of how VM works and if this is indeed how it should work, then why are some users getting hundreds and thousands of reviews upon deactivating VM?
It would seem that I am missing something REALLY simple in my understanding of how VM works! Is there a VM for Dummies post out there? 
All the ones I read pretty much say the same thing as @jprspereira.