All participants who submit their fan works by the end of April (the production period is April-May) will be permitted to select a second prompt! That prompt can't have already been selected, of course, but I think that there will be more than enough prompts left to satisfy everyone who wants a second go—so hit the ground running, Creators, and return for more SSHG prompt-y goodness! (I note that the deadline for second prompts will be the same as the one for first ones.)
Oh, and as a reminder, there's already a good reason to submit entries early: I post in the order in which I receive your entries!
All that said, general prompt-claiming ends at 11:59 p.m. Eastern Time tonight (in a little over three hours from now), so please claim your prompts sooner rather than later!
Questions? Email them to me at sshg.promptfest [at] gmail [dot] com, and I'll get back to you as soon as I return from walking my very patient dog. :D