How do you plan for Boxing Day + Click Frenzy + EOFY + Black Friday peak?

Australia has the most intense retail peak calendar per-capita on Earth. The big four for a Sydney store: Boxing Day (Dec 26) is AU's #1 retail day, bigger than the UK Boxing Day in volume-per-capita and bigger than US Black Friday for many AU luxury / fashion brands. Click Frenzy (mid-Nov) is AU's home-grown 48-hour sale event, 6M+ shoppers, 70× normal baseline traffic on participating stores. EOFY (Jun-Jul) is the End-Of-Financial-Year sale, uniquely Australian, mid-winter not mid-summer, huge for B2B (capex deductions) and electronics. Black Friday / Cyber Monday (late Nov) AU adopted late, now blends with Click Frenzy. Plus Anzac Day (Apr 25), Australia Day (Jan 26), Mother's Day (May), Father's Day (Sep, different from UK!). Our war-room recipe: k6/JMeter at 70× baseline two weeks before Boxing Day, Redis cluster + Varnish FPC with smart-purge, queue-isolated checkout, Afterpay tokenisation for repeat buyers, read-replica DB, Fastly CDN on top of Adobe Cloud Sydney. NRL / AFL grand final (Oct) and wedding season (Sep-Apr) are smaller peaks we also plan for.