Citation-locked rail/coach/ferry/cruise claim letter — UK Delay Repay, EU Rail 2021/782, ferry 1177/2010, coach 181/2011, US FMC cruise refunds, Athens baggage notices: deterministic eligibility + a ready-to-send demand letter pre-empting operator defenses, with deadlines and escalation path. Honest-no: no letter sold on expired windows or time-barred claims.