Without sound like an ***, I'm assing it up.
I see there is a question at the end, but you stated facts. What more could there be?
Yes is the answer.
-US Holiday, no one will be able to log on due to people being home for 3 days
-1st real weekend after launch, no one will be able to long on because everyone wants to long on because it is a US holiday
-Yes there will be more threads. You have started them off, rate up!
-Yes, I agree with the next statement, because it is fact. SE can not handle this load, they were not prepared
-Yes to the next 2.
I suggest you rent a few movies, get some food and booze, and have a fun weekend. or roll on a JP server, their down time is about our peak time.