Ash, how much $$$ have you got to spend?

We did ours really cheaply - depending on what you want to spend for your 'wedding' it may be possible hun - I can help you with some ideas

If not, you can always do what friends of ours did - just invited us around for a Sunday brunch bbq... halfway through they went & got changed, had an MC announce there was something special happening, and they hired a celebrant to arrive at the right time.

They had already asked the two witnesses - so had no bridal party.

Was VERY easy & very cruisy... but was one of the best weddings I've been to because it was just so down to earth & real IYKWIM?

We still had a wedding, but it was very toned down (difficult for everyone in the families to get their heads around... especially DHs as they are Sicilian & his is the first born son, so they were expecting something like from 'My Big Fat Greek Wedding' )
It was amazing... and very easy.
We didn't have a bridal party either, just 2 witnesses & three kids.. but you could even tone it down further than that & just have you & DP & A.... let me know if you want any ideas

The bridal registry sounds like a good idea too, can't help you though cause I just don't know anything, sorry hun