Another dilema

I should be on a Ultra Marathon break.  I am training for the Miami Marathon January 29.  My running is actually going really well.  My speed is coming back and I can still keep my distance.  Except, these fun things keep coming up.

The all night Sun of a Beach run is this Friday.  However, the Sunday after, I have a half marathon that will determine the pace I should be running the full.  If I run the all-nighter, I can't race a half marathon two days later to my full potential.  With it being a race, which I want only to determine how fast to run a marathon, it makes the race useless.  However, since I am running the half marathon at whatever Kenny is running I could just spectate the half and bring my girls and I still have the pace I will be running the full marathon.

So the thought: to all night or to not all night.