We have a 4yr old and 7 month old. We will be staying at the Port Orleans Riverside. 5 days 4 nights. Day one hang out at resort and day 5 hang out at Downtown Disney. Plan is to do 1 day Magic Kingdom, next day Epcot, following day Animal Kingdom. Is it worth it to get the parkhopper option? Really how tiring is it to board and unboard busses with a dble stroller, would it be worth it to rent a car and drive to each theme park? We are open to any suggestions or advise.
I dont think the busses are a big deal...sure its tough at times, especially if its a busy time, but its really not that bad. We have been to WDW about 10-11 times in the last 6 years and my girls are now 5,4 and 1.
We usually get up and go early and get to the parks at opening, then we go back to the resort around lunch (either eat at the park then go or just eat at the resort) We can either swim (depending on when we go), or just relax for a bit. Then we head back out to the parks around dinner time..we always get a park hopper because if we do(for example) MK in the morning we can go to Epcot (or whatever park we weren't at that day ) later and eat dinner or watch Illuminations and walk around the world showcase when it isn't as hot (We go in August a lot).
You didn't mention MGM...my girls love it there PLayhouse Disney, Voyage of the little mermaid, Beauty and the beast, Pizza planet..lol
Some kind of carrer for the 7 month old would be a good thing to have...i wouldn't go to WDW without my Mei Tei or Beco(or slings

) , it is nice to have so if baby gets sleepy you can put them in there and still go on the rides and see the shows without having to worry about waking them from the stroller..and standing in line and having your hands free if another good reason..lol
Hope i've helped a bit....
** if you do not have a hopper, you can leave and go back to the same park, you just can't visit another park the same day.