Lol, seriously....you guys obviously weren't around for WoW's checkered past at launch, or say the beginning of TBC. This is small fries compared to those headaches, trust us.
Here's the deal: they could let you in and then the servers crash because you and the other 1000 impatient people are all swarming the first quest NPCs and clicking on him at the same time. Think that wouldn't take longer? and in that case, NOBODY gets to play for that time.
Here's the other deal: Yes, they could open up another 300 servers if they want. I have no doubt they could manage this. However, for the millions of dollars they'd have to spend on this little thing you want (really, you don't think a server just costs the pay for a BW employee to type in a server name, and then poof-voila, it is done, right?) and then in 3 weeks when the demand per server goes back down to normal levels, with people logging in and out at all times...you have 300 extra servers that are all ghost towns. All so you don't feel like you were cheated for a few days of early access.
Please, let me know where to send some of my grandson's extra pacifiers...I'll be happy to help you feel better!