Pre-registrations of second level domain names are open for a good number of the new gTLDs, and one can pre-register with many different operators.
But let's say I'd like to pre-register a myname.guru or myname.ventures or myname.family domain name through one of these pre-registrars (those are just examples of gTLDs that will be open to the public). What will happen the day these domains open for actual registration (after the sunrise period) if someone else in another country did the same thing with another pre-registrar ?
Is there a first-come first served rule ? Does it depend on the gTLD registrar who will be chosen or is there a general rule defined by ICANN ?