DIY or HIRE??

It depends on what kind of decor.

Draping on the ceiling? Hire a professional.

If you are just hanging a few signs I don't see why you can't DIY.

All decorating is up to us. I was going to do it all our self but the maintenance guy at our venue does tulle and lighting decorations so we hired him. Everything else is being done by DOC and some family that offered to help.

I wouldn't trust myself creating my own floral decorations so for that, I would definitely hire. Something as simple as a sign - I would do myself.

I'm doing all the decor myself with help from friends but we don't have a lot to do. Mostly just hanging wreaths on the doors/garland on the fireplace, placing some signs around.

I am doing pretty much everything myself because I cannot find what we are looking for. We are hoping to get in the night before to decorate. If not, I have a plan b and will pay my friend's son and his buddies to do it since they were looking for some odd jobs for quick cash.

We did: Centerpieces, table markers, seating cards, invitations, all table decorations, sweetheart table, hall decor, aisle runner, and pew decorations. Plus we are doing all the printing/designing of menus, signage and guest "book" ourselves as well.

I'm doing it myself but the venue is also pretty enough that decor is minimal

If it's in your budget HIRE! It will make your life easier.

I diy'd most everything: florals, ceremony decor, reception decor, candy buffet table, gift/guestbook table. The venue let me set up most of the reception decor (place flowers/candles, tie chair sashes, etc) the day before (only took 2 hours with a couple extra sets of hands). My DOC set up the ceremony decor, candy buffet, and guestbook table the day of which was a huuuuuuge help. I did some mock-ups prior to the wedding so they had the details of how things should be set up and should look.