Maybe your land is starting as an ag field, a pasture, recently harvests last week, harvested last year... or maybe six years ago... but just like you need to get your house prepped for the in-laws visti, you need to prep your land for your objectives and goals. And depending on your "starting point" will depend on HOW MUCH and WHAT needs to be done.
*Disclaimer: every forester has a different typical practice opinion, and this is just mine for common pine plantation management in southeast Georgia*
To start with: Ms. OCD... you just harvested and your ENTIRE land is clearcut. Are you ready to plant your pines next month? No... because just like when you FINALLY finished mopping the floors... you have to let things sit (and dry out) for a little bit of time. And just because it looks clean, doesn't mean it's ready to go. Before the in-laws arrive you'll probably do "one last" wipe through and spray a little Febreeze. When you've recently cleared your land, let it sit for a few months and see what starts to pop back up. This way you'll know what you need to do! You may or may not still need to rake up some of the logging debris, but you'll definitely want to herbicide spray to control the competing vegetation, and what you spray will depend on what plants pop back up.
Now the other end of the spectrum: the tornado-volcano mash-up... You have A LOT of clean-up before the in-laws arrive. Will it take work? Yes. Will it take time? Yes. IS it worth fooling around with? Absolutely! Your land was cut maybe six, seven, ten years ago and nothing was done with it... and now it just seems like a large, green wall.
Where do you even start though? Well, depending on what your wall is made of, you may be able to get ac hipping contractor to buy it, or at least "take it" for an even trade to cost you nothing. If you're unable to get ac hipper, you will have to get it cleared still... This is like having to put all your shoes and kid's toys away before you can even begin to focus on the other aspects of the house. But don't forget caught up in the mechanical needs and skimp on herbicide spraying. This is your extra insurance to control all that vegetation that grew up originally!
Now, maybe you're more similar to me, and you're somewhere in between the two extremes. Virtually it is hard to say exactly "how much" clean-up you'll need, but just know that you should plan to do some amount of vacuuming, mopping and febreezing...
Remember though, just because you've cleaned up your house before your in-laws came over for dinner TONIGHT, doesn't mean you'll NEVER have to pick-up your house again. If you maintain the conditions, you'll only have a light cleaning in the future to keep up the maintenance. But the idea is to do a thorough job on the front end, and you shouldn't have to do deep cleaning later!