One of the main causes is seasonal demand; as families & individuals get ready for international travel, there is typically a spike in applications during the busiest travel seasons, like summer vacations and holidays. Because of the possibility of longer wait times and fewerlotsa slots available slots due to this increased demand, applicants must make advance plans and reserve their appointments well in advance. Also, as people scramble to get or renew their passports, unforeseen world events like natural disasters or health crises can cause abrupt spikes in demand. Processing power and governmental regulations are two more important factors influencing availability. The number of appointments available at any given time may vary due to changes in the laws governing passport issuance or staffing shortages in passport offices.
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