From the Kingdom Seneschal:

Greetings unto all those intending to enter Spring Crown Tournament,
Please be aware that both the combatant and the consort must submit a letter of intent, either through the following link (preferred) or by email to TRH Prince Omega and Princess Etheldreda with a copy to the Kingdom Seneschal. If by email, a joint email is preferred.
The Letter of Intent must be received by Coronation, April 11, 2015
If using email, the letters of intent must include all of the following information for both combatant and consort: Society name, legal name, address, telephone number, years of residency and be accompanied by proof of membership with membership number & expiration date that is valid at least thirty days after Crown. If both entrants are combatants, then that should be clearly indicated.
Proof of valid membership consists of a copy of a valid membership card, a postcard (with a date-stamp) or letter from the Corporate office, or a confirmation form printed from the website after an online membership purchase.   – Confirmation of faxed membership applications with credit card receipts as well as membership applications CANNOT be accepted as proof of membership. –
TRHs also request that combatants bring heraldic shields for the list trees.  
In Service to the East, I remain
Dueña Mercedes Vera de Calafia
Seneschal, East Kingdom