Need some help with gold membership

Hi, first post here and in need of some help. I missed out on a season ticket this year and I am now interested in buying a Gold membership for the year for a better chance of tickets. My question is would I be able to buy 16-21 year old banding for myself not just adult because I am 18? Because it only says you can buy adult or junior... Thanks.

Buy an adult one, same price and you get the vouchers

If they only do adult or junior gold memberships they may only do adult or junior tickets this year which would mean you would be an adult if you are over 16.