You get the same G-forces holding your breath as you would not hold your breath. You have to remember that the G in G-forces stands for gravity or something like that. You can't defy gravity by holding your breath. You can feel more or less gravity by shifting your weight or contracting certain muscles, but you don't own gravity boots.
Wow! Looks like you guys drank a lot of alcohol. Were you drunk? You must have had a good time drinking, drinking, and drinking. I just can't imagine drinking that much beer in one day.
It looks like you had a good time. I was asleep during the night . Are those fireworks? I would be in jail if I had fireworks. Lucky you. You get to play with fireworks . Happy New Year.