Michelle,
Are you flying into Orlando International or Sanford? Either way, 1.5-2 hours is realistic, but as others have said, there are many factors which can come into play. It's very much 'swings and roundabouts' and you need to get lucky with everything hooking up to get a really swift turnaround. The good thing is that, because you're on the go, the time passes quickly. Just try to chill out and remember that, after an 8 hour flight, plus waiting time and travelling to the airport, you're on the homeward run and you'll soon be chilling at your villa!
If you are flying into Orlando International you have to contend with the double baggage retrieval system. I sort of agree with Allie on making your way to the far left of the immigration hall, but we have also been lucky at the far right on several occasions. I think the trick is to have a good look around as you enter the immigration hall. Don't make the mistake of following everyone else and joining a queue. Often we have found that there are stations with no-one waiting at all. It's easy to believe that, because there is no-one there and yet there are queues at others, you shouldn't use that station. There are usually officials directing people to keep things moving. If you disembark at the same time as other flights, the immigration hall is going to be busier, but the strategy still applies.
Next up is first baggage retrieval. Even if you get through immigration really quickly, you might not get so lucky with your bags (first swing/roundabout!). If you're travelling Virgin UC or PE, your bags will be off first and on a separate conveyor. If not, your bags won't be far behind. Then you clear Customs. If you're lucky, you'll be waved on through 'fast track'. Otherwise, you may have to queue for a short period.
Next you have to give up your bags to be transported across to the main building. Another swing/roundabout comes into play here. If you're one of the first to clear immigration and customs, you will beat your bags across because they travel separately and they wait for the carts to fill before sending them on their way. And then when they arrive at the other end, if they were first onto a cart, they will be last off. I'm getting a bit pedantic here, because we're talking about minutes rather than hours. And I have learned to chill, honestly!
After reliquishing your bags, you board the monorail to take you to the main building. Even if you've just missed one, there will be another along within a couple of minutes. Walk to the far end of the platform (unless it's packed) as that way you'll be first off at the other end. (Again, I'm being a bit obsessive - it won't make a huge deal of difference, either way).
Now, here's where you can really make a difference. Send the driver(s) in your party to the ground floor to the car rental desk, whilst the rest of the party goes to second baggage reclaim on level B. Since we have been doing this, we have never encountered a queue at the car rental desk. To avoid the potential of passing one another in the lifts, we always agree to meet on the ground floor. Mostly, as I arrive there having collected the bags, dh is just finishing up at the car hire desk.
Now that we're familiar with the set-up, we usually clear MCO within 30-45 minutes of landing. It's a long time since we flew into Sanford, so we haven't got a tried and tested strategy there, but you don't have the complication of the dual baggage reclaim.
To reach Orange Tree from MCO, there are a couple of routes you can choose, but I would opt to take the 417 Central Florida Greenway toll road (south out of the airport) to exit 2 signposted Celebration and the US192. At the next set of lights, move over to the left lane and turn left onto the 192 headed west. Keep travelling west on the 192 until it hits the SR27 and then turn right onto the 27, heading north for a couple of miles where Orange Tree will be on your right.
If you are travelling from Sanford, take the 417 south and proceed as above.
(Both sets of directions assume you will drive straight to your villa. If you have to collect the keys from a Management Company, they could be located elsewhere).
...you may get collared by Dept Of Agriculture here, so a possible 30 min delay. Drop off cases and walk through to security / x-ray point. This took an AGE last year, and although I was allowed through with no checks, the rest of the party were held up for 30 mins. Walk through terminal and board monorail thingy to the other terminal...allow ten minutes. Pick up your luggage again (can take 15 mins) and then proceed to car rental. Depending on queues, this can take anything from 15mins to 50 mins. Collect car, load baggage...(probably return car because it has a fault
