I love having lunch at the parks here in Sydney. It's like a solo picnic. Some people also sleep, read, do anything during their lunch break on a work day.
But be mindful of lunch thieves - the Ibises. I think they're okay. It's nice to see birds but they wouldn't care if you starve. They will take your lunch food when they can!
I was able to take some videos of these birds also called by Sydneysiders as the Bin Chickens. They are also called other funny names. According to one Sydneysider I met, they hate them! lol
Check this 
▶️ DTube
▶️ IPFS