If they are fluttering too much in the container, then place the containers in the dark. Yes, 24 hours is recommended. I'd probably wait to test for OE, too. You do not need to feed the first 24 hours.
If he is able to fly, then let him go free.
Did you read what Dr. Altizer recently told me about OE?http://www.monarchwatch.org/forums/view ... f=6&t=2938
I love answering questions, I do not find it tedious at all. Plus, I learn a lot from most people on this forum.