While you are free to participate in most events as a non-member, you don't earn any points, so can't acheive any knighthoods, cannot be a Minister or earn titles or awards before becoming a member.
To join Adria, you need to fill out the membership form and make your dues payable to "Adrian Empire, Inc".
You should give the payment and form to your local Rolls Minister, or at your option, mail them directly to the Empire at the address listed on the form.
Please note that if you decide to mail the form directly to the Empire, you should make a copy of your payment and membership form for your own records, plus send a copy each to the Ducal Steward and Ducal Minister of Rolls.
If you need a membership form, one can be downloaded from http://www.adrianempire.org/documents/forms/MembershipForm.pdf [1].
A separate form needs to be completed for each person, but you can pay for multiple memberships with a single check or money order. Please make sure you note who the membership payment is for on the check or money order.
If you have any questions, please do not hesitate to email our current minister of rolls at rolls@duchyofalhambra.org [2].