I couldn't resist this one! My closest spot, walking distance, heading to the market along the beach at weekends. I might do this right now in fact. This unfeasibly beautiful lady will make you a tasty local salad, just a little spicey (or NOT, "MAI PHET"), on request, and packed with nutrients:
Then you can grab a paper plate of BBQ king prawns from these guys ...
Pull a cold beer from another vendor or 7-11, find a spot and picnic away .. (Market above is under the trees along beach in this photo, I've headed up the fishing dock ...
Location: Almost any seaside town or fishing village in Southeast Asia :)
Yes, if to picnic is your aim, it can occur almost anywhere :-)
#Sundays are the best :)
You have a picnic at church?
No religious reference, just a mandatory day of rest and a good day for such things! More likely to be a Buddhist temple around here, which may well involve food, nowhere are you safe from picnic supplies here in Thailand.