You will be micromanaged. The most trivial decisions go in circles forever. Changing a lightbulb takes multiple people, meetings, reviews, second guessing and approvals. And that's before any solution ever gets presented to the owners, who have to review absolutely everything before anybody can do anything and who will flip your priorities on a dime at any time for any reason.
Forget job titles and descriptions. Everyone's actual incentive is to look good for the owners, so your job is to make your manager look good to theirs and so on up the chain. You may hear that you're there to take initiative and contribute when you're hired, but you'll sooner or later realize everything you do will be shot down or changed beyond recognition as top leadership does whatever they were going to do anyway.
You'll see it in the enormous amount of project management going on. If you think to yourself, "this is not normal", that's because it isn't. Every last nit is a task and a box to check off, even though the constant second guessing and changing priorities means most schedules fall apart anyway.
Office politics aren't out in the open but very real. The high turnover encourages long termers to form cliques and hoard responsibilities and knowledge to protect their job security. If a clique feels whatever you're doing threatens their sense of ownership, you will get buried in passive resistance. It's the kind of environment where toxic people thrive as long as they can keep a tight circle of allies around them.
If you just need a job to phone it in 9-5 and follow direction, this is for you. If you have competence in whatever your field is and you expect to have the autonomy and trust to do what you were hired for, that is not happening. Go elsewhere.