Hi, Doreen!
According to several unofficial blog sites, The Voyage of the Little Mermaid, and other fantastic new additions to the
New Fantasyland expansion soft opened this past week. Because the attractions are now in Dress Rehearsal mode, there isn't a guarantee that any particular attraction will be open for Guests to enjoy every day, at any time, between now and the previews which open on November 19th.
However, Cast Members will surely strive to keep these attractions open as much as possible, as Dress Rehearsals allow everyone involved to make sure that every possible kink has been worked out, that every expected occurrence does, indeed, occur and that each attraction goes above and beyond Imagineers' expectations now that Guests are part of the fun. Take a look at allears.net, one of my favorite unofficial sources of information for all things Disney, where you'll find photos of the newly-opened areas. Attractionsmagazine.com has an unofficial posting which includes several videos, too. Take a look at all the fun!
I am thinking that, with three days in early to mid-November in Magic Kingdom, you'll most likely be one of those Guests who gets a sneak peek into the magic of the New Fantasyland expansion. Enjoy!
Send more questions as you think of them; we love to help!