The rides won't be walk on, especially since there will only be 4 of them open. Four rides can't absorb thousands and thousands of people without there being long lines.A lot of people seem to think that the rationale for this is very low crowds with the rides being walk on. I think some people may be very disappointed when that doesn't turn out to be the case. The DVC parties, if any indication, were not like that, with a fair amount of crowds and 7DMT being 45 minutes. Not as crowded as the height of the day, but not dead either.
ETA Yes, I see the supposed list of attractions open that was posted before this post.