Some MAA events have a dress code and some do not. It depends on whether the event is sanctioned by USA Archery or the NFAA. The dress code may also depend on what division the participant is shooting in.

USA Archery events

Any event sponsored by USA Archery including, for example, the JOAD State Indoor, the 25-meter Championship, and the Voyageur Cup follow the USA Archery dress code.

You can see the complete USA Archery dress code on their web site. In a nutshell, the rules are no denim with holes and shoes must cover the entire foot. Leggings must not be transparent or translucent above the knee. Please read the entire document for all the details.

NFAA

Competitors in the NFAA professional classes at NFAA sanctioned events must abide by the NFAA dress code. There is no dress code for other participants (within the obvious bounds of decency, of course).

Requirements for NFAA pros are:

• No jeans or denim of any color during competition. Professional archers shall wear slacks, shorts or skirts. Shorts and skirts can be no shorter than two inches above the knee. The waist of the attire must not fall below the waistline.
• Shirts and tops must have collars. Archers may also wear uniforms provided by sponsors. Shirts must have a standard collar, Henley collar or mock collar. T-shirts, swimming suits, cut-offs and obscene or vulgar slogans or pictures on clothing are prohibited. No camouflage clothing allowed.
• Open toed shoes/flip flops/sandals are unacceptable while competing.

The complete NFAA dress code can be found in the NFAA official constitution & by-laws.