Arriving to dessert party right before fireworks

I booked the after fireworks dessert party, it says check in is at 8 with fireworks at 9. Can we show up at 8:45? Is there any drawback or issues besides maybe having a worse spot within the roped section? Any information would be appreciated!

Assuming you are referencing the Terrace Gardens … then yes. When we arrived at 8:50 the garden was so near to capacity we had to stand in the very back and had to break up the party to find enough spots to shoehorn into.