If you take shared transportation such as Mears assume worst case 90 minutes+. You have to collect your luggage & then board the bus & wait for the bus to fill & leave. The bus stops at several resorts & if you’re the last stop it can take awhile. Assuming an on time arrival of 10 a.m. I’d plan on reaching my resort around noon.
Because our last several Mears trips (including when they were DME) always dropped our resort last, I got tired of all that touring other WDW resort parking lots on the Mears bus, so I tried a car service last time & it was a quicker & more pleasant experience - I think it was under an hour from deplane to drop off at our resort lobby, but it took us a while to locate our driver at the baggage carousel. I will say the new terminal C which we arrived at was very nice & far less hectic than terminals A & B at MCO.