I received a B1/B2 from the consulate by stating that I would go for
tourism for 3 weeks, without any contact personat the US.
Nevertheless, shortly after that I changed my mind and I would go for
tourism AND bussiness for a similar period. Should I bother my contacts
in the US to write sponsorship letters to show at entry, with their
contact info and all that?I would expect to have no need for such
documentation, unless the entry port officer has available my consular
application and wants to check for contradictions in the "purpose of
travel" field and becomes suspicious.
Do they do such things at the entry port?
Does my explanation sounds convincing or just would complicate things?