Anyone happen to have a wireless Bluetooth Mic/Voice amplifier

For a very small outdoor wedding ceremony on the beach in March, we are looking to borrow some sort of wireless Bluetooth Mic/Voice amplifier to give the officiant a little more volume over the ambient noise of the waves and wind. Does anyone happen to have something we could borrow for the day? This is an example of what we think would work but before we buy something we'll only be using one time for a 15 minute ceremony, we're hoping a neighbor may be willing to lend us a hand! Thanks a bunch!