Not sure if it works the same for TeamAyu but for my case being in BREAKERZ's fanclub , team brz will set aside a portion of tickets to be allocated to team brz members for them to ballot & then the reminding seats whatever that's left , that will go on sale for the general public to purchase are usually the crappy / leftover seats
It's generally assumed that being in the fanclub , the priority in getting good seats is much higher than a non fanclub member
As I'm not living in Japan , I had to ask my middleman to take care of such matters . Celga was the 1 that was doing it on my behalf but I found them really slow/inefficient/downright ineffective which was super meh >_>
upon the recommendation of a friend since last Aug onwards , I've switched to use the services of this person who's way better than Celga like big time ->
http://japanauction.byethost11.com/
He goes by the name of Kairai & after I switched in asking Kairai for his help , things have been smooth sailing & he took care of my FC related matters real professionally !
When my concert tickets for last Nov/Dec's
BREAKERZ LIVE TOUR 2012 "BEST" -LIVE HOUSE COLLECTION- arrived at his house (before I changed the middleman services to Kairai , Celga helped me to ballot for the tickets on my behalf via team brz) , Kairai mailed my concert tickets to my house using EMS just in time before I went to Tokyo last year during 23rd - 28th Dec
you can email Kairai in asking his help to help you buy concert tickets for ayumi's upcoming tour or if you want , Kairai can help you join TeamAyu & do the necessary paperwork (for a fee of course)
This link's also useful too -
http://japanauction.byethost11.com/?page_id=184