There are no tolls in the immediate area around where you are staying, so no worries about having to pay tolls to go from Windsor Hills to the grocery store, WDW, etc.!
IIRC, the only tolls you will run into are on the highway near the airport. Who are you renting your car from? Florida does a variety of toll passes, and SOME of their toll booths also use EZ-Pass, like I have here at home. HOWEVER... if a pay-by-cash toll lane isn't available/used and you don't have a system transponder, Florida will use toll-by-plate (or something like that), which automatically charges the toll to the "person" to whom the plate is registered... in this case, the car rental agency. The catch here is that different companies charge different rates to pass that cost on to you. You'll always have to pay the toll, but then there's the "service charge" or whatever they call it. I know that if you use the toll-by-plate even once during your trip, Dollar will charge you ~$13 a day for each day of your rental period, additional to the toll itself, even if the car never incurs another toll. Hertz charges ~$5 a day, but only on the days you actually incur a toll (in addition to the toll itself, of course). MY PLAN is to take my EZPass and use it when I can (toll lanes are clearly marked, but don't think that E-pass is the same as EZPass), and take a roll of quarters for when I need to pay with cash (cash toll booths won't make change).
Check cfxway.com for more details. You can see a map of which roads in the Orlando area charge tolls, what the costs are, etc. Good luck... it's kinda confusing. There IS a sticker that you can order (free) for the rental car windshield. You attach the sticker and then log on and enter the plate information, along with your own credit card info, and the toll charges go directly to your card, bypassing the rental agency. Unfortunately my sticker hasn't arrived yet, and we leave tomorrow, so I'm out of luck.