I've been a member of Emerald Aisle for two years now, but I never used it before. My understanding is that a midsize rental qualifies for Emerald Aisle service, and not Emerald Reserve. My reservation does say level of service is Emerald Aisle, so I'm not concerned about that.
On their website, it says Emerald Club membership expires without at least one rental per year. Perhaps this is not a rigid requirement.
If it says Emerald Aisle, and you bypass the counter, when would you fill out the master rental agreement?