here's the thing, these are both valid interpretations on the larger context of the poem which is destiny and uncertainty. it sure means live in the moment as

here's the thing, these are both valid interpretations on the larger context of the poem which is destiny and uncertainty. it sure means live in the moment as don't worry too much about the future, but it's not an ode to full carelessness and hedonism, the next phrase specifically don't say 'don't believe in the future' but to minimally rely on it. it's the Epicurean sentiment of future being partly in control of destiny and in part of fate, being a result of both our actions of today and randomness in the form of actions of everything else living and inanimate. the 'minimally rely on tomorrow' qualify the 'carpe diem' into something between enjoy the moment and take the opportunity you see. the reference to 'not worry about the future' but still 'prepare the vine for tomorrow' in the prior paragraph is clear enough about it, while being random life goes on. there's a strong theme of not believing to being able to control the future as introduction to the specific passage, which comes intentionally with the ambiguous term to broaden it into multiple meaning. carpe as harvest suggest that the author wanted to include both the 'enjoy the moment' and 'take the opportunities in it' meanings.