There are two places near Burkliplatz that one can have a nice BBQ/picnic on a warm day: (1) China Wiese [in front of the Chinagarten] near Bellevue or at (2) Arborteum near Enge.
China Wiese is a much bigger stretch of land and gets more sunshine than the other side at the Arborteum. So if you are looking for sun, come here; but if looking for shade, go to the other side (Arborteum). It is also more geared to a mixed crowd, from families, couples, friends, groups, etc. On the weekends you can also catch the excitement of watching tight rope walkers practice their gig. Watch, or even partake! Good balancing required.
For those who want to show off their booty and immerse in a "fun to be young" bikini frisbee/volleyball/football crowd, they should head to the Arborteum, to see, and to be seen. You can also BBQ/picnic there, but the land area is smaller, and is shadier/cooler. read more