Personally, I believe it is very important to vote to reject (how you decide to vote or not vote on the releases is another matter).
Remember that, according to the ballot, the vote of the P's will be determined only by looking at those who actually voted. I saw nothing about a quorum.
So if only 10% of the P's vote, and 60% of the 10% (or 6% of the total P's outstanding) vote to accept, then the P's as a class will be determined to have accepted the plan despite the fact that 94% of the total will have not voted or voted to reject. By not voting to reject, you can unwittingly hand the control of the P vote over to a minority of holders who may be voting to accept the plan because it furthers some other interest they may have.
If the P's as a class are determined to have voted to accept, you and a number of other non-voters will only have yourselves to blame.
Any legal analysis I post may not be relied upon by anyone for any
purpose. If you want legal advice you can rely on, hire a lawyer.
Federal District Courthouse, Newark