Need your help guys. So we can’t open the doors to our venue until 5:15 (having rehersal first)and the ceremony starts at 5:30. My friend is greeting. There won’t be time for guests to drop off gifts and sign the guest book prior to ceremony. Only enough time for them to find their seat. Should I have my greeter say “welcome. Please find your seat. The ceremony will be starting shortly” so guests sit right away? Or start ceremony at 5:40 instead in case they linger at guest table? Fyi guests know doors don’t open until 5:15.