I warn you upfront: You may find the tech you need is not worth the expense. Newer smartphones are fairly okay with picking up sound outdoors. A log of vloggers just use their phones now, and you may find some YouTube videos of vloggers stepping through all of their equipment! Here is a pinned thread on r/vlog looking for mic recommendations. This sub may have more equipment questions scattered in it.

Since you don't want the personal mics, I think your best alternative is a handheld to prop in front of the ceremony that connects via auxiliary to the phone or Bluetooth, and you want to check compatibility and range on these devices. Usually the reviews can give you a good idea of the quality of the device. I just grabbed the first mics I saw as examples. I'm not certain they pick up voices if you aren't speaking directly into it.

Does this help?