I have only stayed at the Fairfield and enjoyed my 3 night stay May 20-24th. Staff is super friendly. It was pretty quiet even though our room faced the Howard Johnson pool area. The toilets flush pretty loud though. There is no house keeping services during your stay, but extra/replacement towels were bought brought up immediately when I called. Valet services was great. Loved the Panera on property ( if you want breakfast, even coffee, in the morning before the parks, I would order very early, because orders get staked up with longer waits than anticipate). And at night, there is a line for the elevators (we opted to take the stairs to the 5th floor).
One important thing to consider, is that Fairfield wants you to move your vehicle off property at check out or by noon, which would cause it big problem If you plan on going to the parks on the day of check out. I would call each hotel and ask them about parking policy.
Fairfield and Tropicana are fairly close to each other, with Tropicana slightly closer. Both within a 5-7 minute walk which was GREAT And very convenient!!
Have fun on your trip!