I'm a bit confused regarding ticket options. We (two adults) will arrive
monday around 11 am in Gatwick. Our first destination is Sutton, then
our room in Bethnal Green and probably a trip to the Westend. I found an
Offpeak Day Travelcard (FCC only) is 13 GBP each. Is this OK, when we
leave Gatwick with a Thameslink train, then change in Croydon?

Return on Friday will be similar: start (offpeak) in Bethnal Green, some
random trips within London zones, then Thameslink to Gatwick. May we use
the 13 GPB ticket outwards only? When and where to buy?

Thanks, Kai Borgolte, Bonn