Celebrations? Based on the restrictions I'd say that's the wrong word. "Observations" seems more accurate to me.
Actually, the flying lanterns have been illegal for several years - fire hazard
Beach fireworks are also illegal, although many were firing them off anyway. Maybe the city will be doing fireworks unless they've made that verboten too.
No booze? I don't think anyone needs me to tell how many people are likely to adhere to that one.
What I miss most are the beach parties and BBQ buffets the beach concessionaires used to host. Those have been gone for years now. I remember when you used to have to buy advance tickets for those so the concessionaires would know how many people they'll need to provide for.
Now there won't be anything much to attract me to the beach for Loy Krathong this year and the same goes for my Thai friends. Several have told me not only will they not go to the beach, they're not even going to bother making krathongs this year. Apparently this year the holiday has all but fizzled out before it even starts.
It would be nice if maybe next year things can go back to the way they used to be - when Thai holidays were actually fun.