Well it looks like this weekends beta test is turning into a mess. Apparently they're letting people into the beta in 3 waves, Friday, Saturday and Sunday morning to simulate early access. The timeslot you get is determined by when you rsvp'd to your invite.
This means that many people who're only allowed in starting Sunday morning are only going to get max 14 hours of play time before the beta weekend is over at 11:59pm CST on Sunday.
Epic fail BioWare!!!
I'd link to the official announcement on the forums but the swtor site is down at the moment. The thing that pisses me off the most is that they didn't even release the email invites at the same time so some people were pre-designated to only have Sunday access. Brutal!!