I don't know about Shulas (we've never been but are considering it for next trip) but ADRS Il Mulino and the old Palio could both be made through wdw-dine
The restaurants at the S&D that take reservations can be booked thru WDW dining. (Also, they can be booked directly throught the S&D resort if you are staying there. It's an online function on their website.)
The exceptions are of course the counter service places, and oddly enough, Garden Grove at the Swan does not take reservations for their w/e character breakfast (though they do for their dinners). Go figure.
Dreams Unlimited Travel is committed to providing you with the very best vacation planning experience possible. Our Vacation Planners are experts and will share their honest advice to help you have a magical vacation.