The fee is a processing step, not final approval or permission to work. Review the actual outstanding decisions before relying on a move date.
Use a person-by-person milestone list
Record what each notice confirms, what remains and the appropriate next instruction. Visa availability and admissibility still matter. Keep housing, school and employment commitments distinct from a payment receipt instead of assuming the family will all be ready at the same time.
The official program describes an online application and nonrefundable processing fee, applicant vetting, a gift request after successful vetting, and then the remaining visa process; a cleared payment does not itself confer admission or permanent resident status. Assess EB-1 or EB-2 eligibility first, read the current official terms second, obtain a licensed U.S. immigration attorney's view on admissibility third, and consider the nonrefundable processing fee only after those three steps. Anyone offering a guaranteed completion date is describing something the published process does not support, since government review, visa availability and possible additional document requests are outside an adviser's control. Official material describes the process in terms of weeks, but that is a description rather than a guarantee, and the final step depends on visa availability under EB-1 or EB-2 as well as vetting, interview scheduling, and any request for further documents.