During the night surfing scene notice that the sun is evident in the background (look closely it does not appear long). There are also shots where you can see clouds and faint blue sky. Moments later you see Keanu and Lori sitting in the water with completely different lighting which was actually taken at night and further distinguishes that the surfing shots were not actually done at night time. I heard the scene was shot during the day with a filter so it looked like it was shot at night.
Johnny is reporting to Angelo on Bhodi's movements that day. He comments on how he goes and eats lunch at "Patrick's Roadhouse." There is an actual bar and grill on the Pacific Coast Highway right out of Los Angeles called 'Patrick's Roadhouse', but Patrick Swayze also starred in "Roadhouse" a few years earlier, so this seems like a deliberate nod.