Outdoor ceremony sound equipment

You should be fine with speakers and maybe a sub-woofer and maybe a microphone.

We are also having an outdoor ceremony, although our ceremony is double the amount of people. We are renting two speakers, a mic, and a sound board (a lot better to play music using the sound board).

Even though you only have 50 guests, I would still recommend a mic. You never know which way the wind will blow or one of you might get choked up and then you won't talk as loud.

You could always buy a sound bar that way you can keep it, this is what my friends are doing for their music. You will need extension cords possibly but I cant think of anything else!

50 people is still a decent amount and it depends how loud you and the officiant are. I would strongly recommend you consider having a mic/speaker for it as nothing is more frustrating for a guest when they can't hear you.