My grandfather uses oxygen so in his home so we do not light any candles there. We were planning to have candles on the tables at our wedding reception and I'm wondering if anyone has any idea what the guidelines are around this. If we use the LED candles on his table and all tables surrounding his table, can we use regular candles on the rest of the tables? (Note that he is also in a wheelchair and will likely remain at his table for as long as he's at the reception-- probably just for dinner.) The reception space is quite large-- we are having over 200 guests-- so I'm wondering if there are any guidelines around the size of a room and the candle use. Thank you!