So, I did not make a huge registry because we had a house fire and are rebuilding our house and still fighting the insurance company on getting paid. It is what it is. But I didnt make a large registry because I didnt have time and I didnt want to get a lot of stuff that we would just have to put in storage but I knew that there would be people that would insist on buying us something tangible.
Well, now my MOH and the BM are throwing us a couples shower/engagement party rolled into one to celebrate. They ended up inviting like 75ish people that are really close friends and family of FI and I. I just looked at our registry and I only have 45 items on it. I also got an email about a "completion discount" on our credit card that is actually really nice since we have to redo everything.
Would it be in poor taste to add more items or leave it alone? I am torn on what is the right thing to do and what we should do.
Also, we finally got caught up with the house and should be moving in the week before the shower/party.

Re: shower and registry etiquette
Sorry to hear about your house. Good luck with the new build and moving in.
No problem in adding more things to it. Mine's actually getting low, so we added a few things ourselves.
And I don't think a large registry would offend anyone unless you had like a bunch of items that were $500 or something. As a guest, I like to see a larger registry b/c it means more options to choose from.
And of course no one is obligated to buy from a registry or at all, but it's good to have a lot of options at different price points too- makes it easier for your guests.