I need your opinions!! Please!! :)

Samantha • Life is short. Find someone to love completely.
Tomorrow (at 8am) I will be having my second trimester ultrasound (20w2d)!!! :D
My husband and I have planned to have a gender reveal party this coming Saturday.
HERE'S MY QUESTION:
Should we find out the sex of our babe tomorrow morning, when it's just us?
OR
Should we wait and find out with everyone on Saturday?
Pros and cons for each scenario are welcomed!
Oh! By the way, this is our first baby! :D
THANK YOU IN ADVANCE FOR ALL OF YOUR OPINIONS!! THEY ARE MUCH APPRECIATED!!
(This is last time we saw our baby at 12 weeks!! We're so excited to see him/her again!) #cutechubbytummy