I'm really pleased you are having a good time.

I don't want to be a party pooper but your headaches could be related to CO2 retention. This is one of the symptoms.

I used to suffer with headaches all the time when I was working, I think it was stress and the artificial light. Since I left work I rarely get them. However if I do get them now 9 times out of 10 its C02 retention. When I use Oxygen they go away without having to resort to painkillers.

It may just be something to keep in mind.

Have fun

Love
Rach