I would say you cannot ever safely put off getting your fingerprints and you should return to the U.S. immediately. The reason they won't send...

An LPR or USC can file for a step child, if the relationship existed before the child turned 18. The child will not be a derivative USC based on...

You can work anywhere you want, there is no need to wait any amount of time.

Your change of status is not a new visa and you will need a new visa if you wish to come to the U.S. in a different status.

When you send something to the local USCIS office, they do not generally make any updates in the computer.

In practice, for advance parole based on a pending adjustment, one needs only to complete the form and pay the fee.

It has not moved because they are issuing enough visas per year to meet the quota without changing the visa availability date.

Yes, they can file applications for visitor's visas to come to the U.S.

You cannot get the visa issued before it is available.

The answer is no, but you should indicate you were charged with an office and provide documentation.