ZRH fast track for A3*G with Y ticket on LX flight

Hello to everybody,

I will fly this friday (FLR-ZRH-GRU) with LX in economy class. I have already the number of my A3*G card printed on my eticket.

I will arrive from Florence in Zurich (if I remember well, I will arrive at gates A) and then I will leave from ZRH from gate E.

In some weeks I will be back with Swiss again; GRU-ZRH-FLR.

Do you know if I could use Fast Track security lanes in Zurich or/and in GRU? According to Aegean website a passenger with Aegean FF gold card can use Fast Track only when flying with A3 metal, but I would like to receive some suggestion/evidence of real experience, if any.

Thanks.