I was told they won't do
MNSSHP on the 31st because it is a weekend. That was from Disney reservations number.
WOW!!! I don't know if that is true or not and we won't for months. The dates haven't been released yet. But the Halloween Party has always been sold out on Halloween itself.
MK is really the only park that does any kind of decorations for Halloween, if that is important to you.
I don't think the MK has the best restaurants. I think the nearby resorts are better.
If it is important to you to have your son's birthday "recognized" in some way, the
only way to assure that is to plan, and pay for, a special thing yourself. You can have special cakes delivered to restaurants or you can have Disney Florist decorate your hotel room etc.
Hundreds, if not thousands, of guests celebrate something every day at Disney. Disney can not individually recognize everyone ---- and they don't. Some restaurants may give you a cupcake with candle, or confetti on the table, or the CM's may wish you DS "Happy Birthday" or they may not.
Good Luck in whatever you decide to do.