Been waiting for one STEP ticket (12:21:44), with nothing that I was able to access locally since I received my notification email.
I was able to register on the open sale and was able to buy one ticket. Registered without difficulty. (I checked with Partiserv and was told this was OK as a STEPchild.)
I clicked in today right after 1200 PST, first on Safari and, maybe 10 minutes later, saw people were having problems with Safari so tried Firefox on a separate machine (um, TorBrowser, actually - was not trying to be sneaky, that's just my other browser, obviously I had to turn on JS and allow cookies.)
Possibly random chance, or not, Firefox came through a few minutes after I tried that, and I did receive my single ticket.
Safari never stopped showing me a scrolling bar the whole time I clicked through with Firefox/TB, but I closed Safari down (moment of blind faith on my part) once I reached the token window.
If STEP later notifies me I've received an option, I'll roll it over to the next STEPper in line.

Now I have to go engage in a lot of frantic travel arranging, dog-sitting-planning, and stuff....
insert Snoopy-happy-dance here
Anyway, this is a great relief, and many thanks and a lot of cookies, flowers, and whiskey are due to all the ticket/organization people who made it happen.
Now hoping it works out for everyone else.
[chews nails]