In addition, don’t say anything that suggests you will work, even if unpaid. Don’t mention volunteering, helping a friend, doing remote work, etc. The rules are quite specific about what visas allow and do not allow, and many border people are just there to catch a paycheck - they will absolutely err on the side of denial. It is not a fair game, and you will not be given a fair chance to explain yourself.
In addition, don’t say anything that suggests you will work, even if unpaid. Don’t mention volunteering, helping a friend, doing remote work, etc. The rules are quite specific about what visas allow and do not allow, and many border people are just there to catch a paycheck - they will absolutely err on the side of denial. It is not a fair game, and you will not be given a fair chance to explain yourself.