Costco same day delivery 2026 — powered by Instacart in the United States and Uber Eats and DoorDash internationally — is growing at a faster pace than overall Costco digital sales, which themselves grew 22.6 percent year over year in Q2 2026. When CFO Gary Millerchip made that observation on the Q2 2026 earnings call — that same day delivery is "growing at a faster pace than overall Costco digital sales" — the commercial implication for roadshow brands was immediate and sign