Hi there, sorry to be the bearer of bad news, but access is determined by your outgoing flight, not incoming. No lounge privileges with economy class (other than with Skywards status of Silver & above)
However, if on your return sector DXB-LAX you are travelling once again in F class, then you will of course be able to enjoy lounge facilities ahead of your departing flight.
Seychelles
Excellent choice for a honeymoon destination !
Best wishes and have a great trip
