Just make sure you are ready to go at 8 a.m. eastern meaning that you have already filled out the lead page for resort wanted, category, dates, and number of guests and are ready to click continue as soon as 8 a.m. eastern occurs (but not before). Once you are to the second page and then confirm what you want and click, you thereafter get twenty minutes to do everything else needed to complete the reservation while the room is held.
For most things, doing it exactly at 8 a.m. probably does not matter. However, I have seen some rooms, like an opening at 7 months out for a boardwalk view studio, disappear entirely within a minute after 8 a.m.
I did exactly this. I had made reservations online before, but for this one yesterday I knew it w/b a pressure packed few minutes. So the day before, I got up at 4:45a (I'm on West Coast time) and got my pc up and running, went to the
DVC member page, and saw the room at the resort I wanted was available. Except this was actually a day BEFORE I really wanted to start my reservation - it was just for practice.
At 5a, my time, I pretended to cancel my reservation at my home resort then went back to the booking page. I needed to free up those points before I could book the resort I wanted to switch to. Took maybe 3-5 minutes. The room was already gone. Happened that fast.
So I decided for yesterday I had to take a chance and I canceled my home resort reservation before 5a. I once again saw the room at the resort I wanted was available starting the night I wanted to begin my stay. Right at 5a I grabbed the room and went through the rest of the booking process.
This took under 10 minutes. When I finished I went back out of curiosity and checked the resort again for that date - the room was blocked out, gone. Same as the day before, except this time I was the one who got it.
Later I called MS to make my room requests, and the CM commented that I had gotten the last studio at that resort for that date. I didn't know they could tell that, but he brought it up - I didn't ask.
So, yes. Practice. Have your fingers all loosened up. Especially if it's a resort with limited availability (which you can see based on the prior days according to the online booking system).