First Amendment - Tattoos
Where the designs are not rote application of standardized designs, making tattoos is a form of expression protected by the First Amendment.
No proof in record that allowing tattoo shops would injure neighborhood's character or harm tourism.
Quoting Jimmy Buffett does not suffice.
http://media.ca11.uscourts.gov/opinions/pub/files/201415354.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.