Jag är rätt övertygad om motsatsen. Det är ganska vanligt att ha kravet om att man måste vara medlem när man flyger för att få räkna en flight. Hur det är på just M&M vet jag dock inte.
Från SAS villkor:
2.5 Travel and activities that took place more than six months ago cannot be retroactively registered. New members can register points retroactively fo
r travel or activities that took place up to 30 days before the membership commenced. Retroactive registration can take place only when accompanied by valid documentation. Valid documentation is:
− Copy of flight ticket or travel itinerary if travelling by e-ticket. Ticket number, flight number, booking class, date to-from and ticketed name must be visible.
− Hotel or car rental invoice.
Documentation sent to SAS will, after the case has been closed, be stored for a maximum period of one month and will then be destroyed.
Members are only entitled to points for which they have performed a valid activity. SAS may at any time withdraw points for any activity wrongly registered on the member’s EuroBonus account.
Medlemsvillkor i EuroBonus - SAS
Åter igen är SAS bättre, då Lufthansa säger:
1.2. Commencement of membership
Membership
commences upon enrolment, when an individual mileage account is opened through Lufthansa or a joint operator of the programme
2.3. Mileage accrual
Miles may be earned from the
commencement of membership.
Miles & More - Terms & Conditions - Miles & More Terms & Conditions
Så du har rätt, och jag har rätt