Please complete your timelines. Are you referring to noa 1 or 2. If 1, something is amiss. If 2 perhaps it would be adjudicatated shortly. Was your check cashed? Or card charged?
There are recheck counters right before you exit customs. If for some reason they aren't available you would exit immigration with all bags and proceed upstairs to ticket counters. At most a 5 minutes walk
I suppose it would work but they probably prefer one check. I would see about getting replacement from the bank as it hasn't been cashed. In the future just write personal checks as it is easier to track and write a replacement if necessary
I think since you have been a Green Card holder for enough time it might be easier under 5 years rule but if there are no issues with your relationship then apply under 3 years. Be done with uscis 😁
Please update your timelines. If you got NOA2 the petition was approved and sent the petition for processing at nvc who will in turn forward the case to the embassy. Start bugging the nvc for the case number in a couple of weeks so you can schedule interview and medical.
You may already be considered married in the view of the embassy rendering the k1 void. Not sure of this particular embassy but others have considered an engagement party as already married.
It's about 1.5 to 2 years to complete the process. Strongly suggest you spend more time in person.
Additionally others recommend going the spouse visa process instead. Cue crazy cat with the comparisons.