Does anyone know if this DMV is doing registration renewals and/or inspections as well?

I believe they are doing Online registration not sure of indoor registration. Inspection was open and relatively fast when I went a few weeks ago. This was Randolph Inspection Station

East Orange is still taking walk ins for Registration and title services but you'll have to be there by like 3 AM. Tuesdays and Thursdays are for senior citizens and appointments only so don't bother going on those days. And make sure you reach around 3 in the morning.

Randolph.is driver license only Washington and Newton are reg.only but you must make a appoiment on line