hahaha which stress test did you do? the 9th or the 10th? the 9th was a shocker with people not being able to get on for 30 mins.
The 10th was a better but i did dc 2 or 3 times.
Im playing on "Sea of Sorrows"(us) because it is the unofficial Australian server (from what i have read) also the "mmo champions"[mmo champion guild] is rolling there *might not be a good thing*)
Not sure if ill be multi-boxing but it doesn't have a sub fee so i can't see why not.
The only downsides i have noticed are:
1) You only have 5 character slots per server (you can buy more for 800 gems each, 800 gems= $10 aus)
2) I believe you a stuck on the 1 server unless you pay gems to transfer off it (1800 gems for a full server 500 for a low- i didn't look at any others *could be wrong*)
i did spy a way to turn gems into in game currency and vice versa (though i think this is player driven)

ps my friend didn't get booted off the stress test until he tried to change zones 20 mins after the stress test "ended", if you want to get a bit more play time if they do another stress test