We're looking at booking a trip online where we know for sure when we want to go but not yet when we want to come back. All right, thinks I. We'll just book Economy-Fixed for the outbound and Economy-Flexible for the return -- that way, for a 100€ service charge we'll be able to change the dummy date I enter now for the inbound, when we know the actual date we want.

Then I noticed this warning at the top of the page:

> Please note
> In case you have chosen a return trip with different fare types the
> most restricted fare rule will apply

Does that mean that my 'method' will in fact not work? That the 'most restricted fare rule' applies to the entire itinerary? If that is the case, why do they offer the Flexible option for hundreds of euros more if you don't get the advantages (change of inbound; refund) from it?

cheers,

Henry