Sunglasses in an Aerobat no problem but that was very tame
See Patty (Wonderful) Wagstaff here
http://pattywagstaff.com
I can't open the page cos our fiewall is a super "NetNanny"
but there used to be a video clip of her doing rapid rolls in her Extra. Watch the long hair experiencing +ve and -ve G. Marvellous. The lady is a class act.
BRL the comments I could add to your statement should be best posted on JetBlast or the late and lamented Afterburner
JmDt I hope you don't get sick and really enjoy the experience. What aeroplane will you be doing the aeros in? One of the CASA built Stampes perchance?