What to do when you only have a day with someone?

I met a guy on holiday and at first i was adamant that we were no more than friends, though he did earn some points when he kept wrapping his arm round my waist when we walked together. We were with loads of other people (our age, roughly) and he didn't seem to care at all. I only had a week there, and that was the first night i saw him. We met up again by coincidence on the last full night and i finally kissed him (omg it was the most romantic thing... at night, beautiful gardens, everyone having a great time). We were both so happy but also sad that it was just the last night, and on the last night we had to get together, and i blame myself for that. We met again in a park the next day a few hours before i was meant to leave, with all the other people, and he didn't seem to care everyone was watching us. He was so sweet and only a few times did we properly kiss, it was mostly incredibly cute pecks on the lips. Best kisser.

Guys my age are stupid, so it's fitting that he is 2 years older than me. He is mature and kind and funny and flirty...sigh...(notice how i dont care what he looks like, though he's quite cute)

So now im back home, and we both miss eachother like shizzle, and we were both happy when i found out that going back next year is definatley on the cards. But only for a day.

What do you do when you only have a day with this amazing guy? I dont want to let this go because i will never find a guy like him again, especially not over here. He knows already how to treat me because it's in his nature.

What would be the best way of making it the best day for both of us?

(yes, i am legal, but thats not what both of us are thinking about, AT ALL) (and sozzles for the essay, just thought i would give you a bit of background)