Greenhouse prep for winter

Very excited to just have finished building my greenhouse in preparation for spring. I live in Zone 5.

Questions for those green thumbs out there... I'm a novice at best but eagerly trying to learn.

1. Do you do anything to your greenhouse to prep for winter?
2. Do you use landscape fabric / gravel to help keep critters out?
3. Is it best to prep the ground inside the greenhouse to plant directly in ground or build up raised beds?
4. Any plants you'd get put in the ground before it freezes?

Any tips you can share are much appreciated!
Happy fall!
-K

1. Do you do anything to your greenhouse to prep for winter?
2. Do you use landscape fabric / gravel to help keep critters out?
3. Is it best to prep the ground inside the greenhouse to plant directly in ground or build up raised beds?
4. Any plants you'd get put in the ground before it freezes?

1. Yes I take the plastic off and put them away! We get to much wind here for the cheap plastic greenhouses to stand up so I don't even try anymore
2. No and neither of those will keep any critters out, voles just chew through landscape fabric and it makes it harder for the cat to catch them.
3. It depends. how well do you bend, how tall is the greenhouse, and how tall are your plants?
4. No even when I had a glass greenhouse there's not enough light where I am to do anything over winter and over wintered crops are never out of the way in time to plant early spring crops.