re: Disney Pros, is it worth it to stay on site?

We stay offsite with young kids under 6 in a free Marriott condo using points. Washer and dryer is great to have to save on packing too much. Tickets cost about $1100 total for the week and youngest is free being 2. We rent a double jogging stroller for $100 for the week, a rental car from National for about $200 for week using rewards and get a big SUV or van. For food we bring breakfast foods with us into parkvand eat while we wait in ripe drop or share a pre park opening meal to save cost but beat the crows in rides. I never use fast passes on Soarin at Epcot because we eat at Garden Grill and ride before 9:00 and the same at MK for mine train with Be Our Guest. I'm at line for Peter Pan when it opens after riding Mine Train twice and getting child swaps for later in the day. We go offsite for a cheap lunch like Chick-fil-A and then go back to park by 4 with snacks. For dinner we find a quick service or bring food with us into park. I don't wanna waste an hour eating in the park.

So for our last trip we flew and spent about $2500 total. This time we are driving so we will spend about $1800 total.