you probably wont have chance to go back to the hotel and change for dinner. We find that we go to dinner on the way home from the parks as they close late. That still means eating at about 8.30-9pm and if we were to go back to the hotel shower and change it would be 9.30-10pm to eat and the children would not be happy.
The first time i went to orlando i took lots of dressy dresses, maxi diress, wedge sandals etc and didnt wear one of them due to being late back everyday. now i just take day time clothing, shorts and nice vest tops. Im not one for sporting brands anyay so would be smarter shorts and tops rather than a very casual option.
most restaurants especially along international drive the only rule was that men must wear shirts.
ci ci's pizza (there are a few on idrive) it looks a bit of a dump but very reasonable buffet style restaurant and the children loved it. specially the cinammon buns on the desert buffet.
A few nice restaurants in Pointe Orlando on International drive.
Last time we went we stayed on international drive and didn't hire a car, used the i-trolley bus to get up and down i drive and to sea world, aquatica and universal. hotel had transprt for universal, busch gardens and the water parks and paid $20 for taxi transfer to the disney entrance (ferry or monorail), we def saw much more of the area doing it this way and will do it again. The children love the tack and glory of going into the $ stores and spending thier pocket money, they also insited on going to chucky cheese whihc was hell on earth for an adult but the children loved it, think pizza hut in the middle of an arcade, for youngish children (4-10 ish)
Dont go to the bbq restaurant next door to coco keys water park hotel as it wasn;t great. (coco keys water park good for a slightly quieter water park, we stayed in the hotel and was good)