Magic unlimited runs all the week. On Weekdays you have really very low crowds in both parks and everything is a walkthrough. If you stay longer I would give you the advice to stay the weekends first in the main park and change to the studios when the crowds are coming.
As a matter of fact on some Weekdays during MU there are so less crowds that they don´t use Fastpass because there is no need to.
For me who get kind of panic in big crowds it is a great Time to be in DLRP.