Ask HN: Most valuable use of time during an incubator/accelerator

HN, my startup Setkick is about to embark on a 3 month journey with Aussie incubator Startmate - which is similar to YC's model.

Understandably this question is quite general & product specific - but I was just wondering if anyone who has been through a similar program - had any general advice, on what they found valuable to focus on during this time.

Cheers,

./c