It's up to you. Pre-check-in can mean you don't need to go to the front desk at all. You can still go there to get Magic Bands if you didn't receive them in the mail [anyone from outside the US has to pick up their MBs].
They will text or email you with your room number when the room is ready and provide your room number. You can drop any carry-on from your flight off at Bell Services and go start enjoying the parks.
Some guests like checking in at the desk anyway. Interacting with the CMs can be fun.