We have done the package at Hollywood and Vine and thought it was great.
You need to be aware, however that the other 2 restaurants that participate are not as good of a "deal" money wise. If that is not an issue to you, then go for it, because the seat location is very good.
As you are going in a few weeks, however, check with disney dining because many on these boards have been saying (and it has been my experience lately) that the times available for the package or otherwise are very early. If that is the case, you will end up having to "kill time" in between anyway, so you may be better off without the package.
It really all depends on the crowd level and your threshold for waiting. If you don't mind sitting and people watching for a little while and it is a nice evening, then save yourself the extra money and just eat the regular dinner (not the package) then head over to Fantasmic!
We are trying this route in October as the cost was becoming prohibitive with 5 of us paying extra and not being able to get anything later than a 4:50PM reservation for a 7:30PM Fantasmic.
Whatever you decide, have a great trip!!!
