There was an outdoor cinema screen set up and when it got dark enough they projected the film onto it. We sat on the grass. We took a few snacks but usually you are not allowed to drink in the park, so we didn't take any alcoholic beverages. Some other people had beers, so I walked up to the pub and bought a bottle of wine. The guy behind the bar was very helpful and found me some paper cups to take back with me.
We should have brought some warmer clothes - it was quite chilly by the end of the film! Well worth it though.
Jurassic Park, it's a classic, isn't it?