Im on the same boat as most of you. Did IUP and confirmed it had the right billing info, on ordering date it wouldnt let me in till 8:05, but showed my debit card instead of credit card, within the 45 seconds it took me to put in the new numbers got bumped to Sept 27-Oct1. Im "upgrading" from an XS Max and is my first year upgrading yearly because of IUP, so Its not as big a jump as it was from my 7 to to the XS.
Had similar week past launch delivery date last year for the Max and got it the Wednesday after Release. My 7plust jetblack had two weeks out and got it within a week and a half, so I'm hoping for delivery mid next week.
Would've been sweet to get it on the 20th, but hey, Links Awakening comes out on the switch this Friday and I am hyped to play that, my nintendo fanboyism can hold me over.