Originally posted by elena
anybody can explain to me how must I do priority seating?...
There's different ways to do priority seating.
If you're 1) staying in a WDW resort 2) at a busy time of year and 3) you have a particular restaurant you really want to try, you may be able to have the priority seating added to your reservation. Another option for Resort Guests is to call from your room phone... I believe there you can reserve up to 24 hours in advance, which should get you just about any time you want, except perhaps on a special holiday.
Other times, you can call 407 WDW DINE... same day or up to a day or two early. I've had good luck with that, though I see from another post here, others have been on hold for a while.
For the Epcot restaurants, you may want to just stop by Guest Relations (on the left, as you pass Spaceship Earth, entering the park). For the other parks, I'm not sure, and so would suggest you pick up a guide map as you enter and there should be a note about it (or ask any Cast Member as you enter).
If it's not too busy, you can walk up to the podium at most restaurants and book a prefered time directly.
Priority seatings replace the concept of 'reservation', but work pretty much the same. Actually, it now seems that you are more likely to be seated at the stated time (or earlier) than under the previous 'reservation' system. It's just not guaranteed.