Ushers needed?

It depends on what you want. You probably don't NEED them, but if you want more people involved in your wedding then you could maybe have 2

We had about 75 guests and no ushers. I wasn't there to witness but I have a feeling people managed to figure out that they were supposed to sit in the chairs

You don't need them. We have two because I've always been super close to two of my cousins (they're more like brothers to me) so we wanted to include them.

Ushers are not necessary! People can seat themselves I'd just block off however many rows you need for your immediate family so that they have reserved seats in front!

Don't need them! We had them, and I kind of felt bad because I felt like I was giving my bff a job rather than an honor or anything. He didn't mind, but definitely don't need ushers!

If you decide to have people seat themselves, make sure to "rope off" those pews that will be reserved. A reserved sign sometimes is not enough.

If you have programs, make sure they are in an all too obvious place and can't be missed for pick up or placed on each seat.