Ok so I can offer two perspectives for you as our original wedding was cancelled and we ended up having a micro wedding (Covid related cancellation).
So we were due to have a big wedding, 60 in the day, 80 in the evening. Farm venue. Celebrant to conduct, band in the evening. Dress,3 bridesmaids, bespoke suit, then general decor, flowers, cake etc. I did A LOT of the DIY myself so saved a bit of money there but all in all it was going to come in around £20k.
Our micro wedding (us and two witnesses), same suit, different dress, photographer we had already paid for as part of the big wedding, the meal for 8 family members came to just over £2k.
we could have done both cheaper and equally more expensive. Wedding venues are expensive, food is expensive as is alcohol. Dry hire venues are a good way to cut costs but there is a lot you have to do yourself then! Anyway happy to answer any questions!