Not yet. I am planning to. I'll wait until I get the passports. I'll probably take the passport to the office, not the certificate. I am also planning to notify my employer. I'll also probably wait until I get the passport to do that. I think changes to I-9 mean that the naturalization certificate is no longer an A list document (i.e. proof of identity and employability, but the passport is). Not a big deal anyway, as the nat. cert. plus soc. sec. card would also do. For the office I will probably go to the one in Sunnyvale if it is still open. I like that office better.
[Edit] Oh, no! It seems that Sunnyvale office might not be open. Well it used to be somewhere close to El Camino Real and Mathilda. I can't seem to find it by zip code, and the office locator of ssa is not very good. It just shows me one result per zip code. There is one in Mountain View. I might try that one:
I think I set the priorities appropriately, passports and N-600 have more priority than SSA and I-9. The latter don't have any immediate impact in my life, but the former have more impact.
By the way, I sent an e-mail inquiry to SSA a few days ago to ask them to update the FAQ with what to do when one naturalizes. I haven't heard anything back. It's been almost a week
No, I signed with all the time of the world at home. I practiced the signature a few times before putting down my John Hancock on the certificate, as it is not the usual way of signing for me. Of course the certificate has to be signed before you send it to get your passport, so try to schedule a few minutes of quiet time to sign it before you send it for the passport.
I don't think Jeans and snickers will qualify as appropriate attire
They'll probably won't kick you out, but it won't look good. I chose to go with Bostonian leather shoes, black suit pants and a shirt (not a suit shirt, and no tie). I would describe that as semi formal. I would think of it as go with leather shoes and build the rest of your attire as what could look good with that, but no jeans
My 2 cents.