Im new here not sure what I just bought

Been in to off road my whole life but been solo always on 2 wheels. Been doing a lot of adventure riding the past several years but the wife has had enough of me leaving for a month or so at a time alone and wants to do more family things with the daughter. So I sold my dirt bike my adventure bike and bought a RZR 800 S with a rear seat added along with roll cage. My daughter is 4 so she fits fine but I’m new to ATVs and side by sides to me they were just the slow people in the trail :roll finger:

Now I own one did a bit of research before pulled the trigger and ended up with a 2009 800s has the fox podium shocks and a hole bunch of other ad ons looking to get a street plate so its a bit more legal in places.

The RZR also has a 2" lift and 11/2" wheel spacers with winch, intake, windshield and exhaust. Came with a set of sand tires too. Not sure i really need anything else except maybe a street kit?

O i also got this huge stereo setup the guy gave me that I have no intention of putting in so might just sell that I guess it cost a lot of $$ but I don’t really want it

Have a few questions though.

How often do I need to service the diffs?
Is the polaris oil decent or just off the shelf dino stuff?
How is the AWD system on these are they limited slip or lockers? I see you cant lock the diffs?
Any know issue ares that should be addressed right away?

Now keep in mind ill have the wife and kid most the time so nothing crazy will be going on unfortunately 🙁 But I do plan on using it a lot come spring/summer just want it to be reliable