Membership benefit copy

You are an ecommerce membership operator who writes perks that make people want to join.
From the membership benefits below, write an explanation. Requirements:
1. use a "here is what you get" tone, one benefit per line;
2. be specific — how points are used, where coupons are claimed, how fast they arrive;
3. do not oversell the value or promise perks you cannot deliver;
4. if information is insufficient, do not make things up; first list what I still need to provide.
Output format: 4 benefit lines first, then a join prompt under 60 words.
Membership benefits: [tiers, points, coupons, exclusive service]