[EuroPython] Various questions (as "Am I registered?")

[Riccardo Galli]

Hi,
me and my brother (Federico Galli) tried to register to EuroPython.
Actually, he surely registered (he filled the first form with all the 
data needed and pressed the confirm button) and he got 2 mails, one 
about his info and one about how to pay.
I filled the first form and in the second page I didn't confirm (we had 
reasons to go back and register my brother first). So I result as 
registered in the first form, and can't see the second page where I 
should confirm my registration.
I have received just one mail (the one about my info, and not the second 
mail about the payment), so I'm not so sure about being registered. Am I 
registered?

Can we do just one bank payment (and be sure you know the payment is for 
both of us) ?

Do we need some certification about being students or you simply trust 
people?

Last thing, I found the phrase
"""Registration will take place at the main reception in Building 33 
<http://building.web.cern.ch/map/building?bno=33> on Monday, July 3rd 
from 8:00 am until 9:00 am."
Is it intended as a "on site" registration for people who didn't 
registered earlier, or must we be there in that hour?

Thank you for patience and clarifications,
Riccardo and Federico Galli