Out of curiosity, what were the two exposures suggested by the two metering methods?
On a beach in bright light using negative film, I would probably just use sunny 16. Sand is bright. So I want it to have some healthy density on the neg. Using transparency film, I would probably close down half a stop, based on experience. Sand can blow out quite easily on transparency film. In bright snow that was covering the ground, I'd close down a whole stop with transparency film, and use sunny 16 with negative film.