I’ve been married twice. The first time my parents paid for my dress and the two bridesmaids and wedding breakfast (and probably one or two other “bits” I can’t really quite remember. We paid all the legal stuff, registrars costs etc, the church fees - Catholic Church so wasn’t much! and the the church choir which again wasn’t much. We paid for the suit hires I think or his Dad may have given us some money towards it. We asked for money as wedding gifts as we were living together but wanted a couple of big ticket items like a new sofa and dining table and put the rest to the honeymoon which was a cruise.
In hindsight I should saved everyone and us some money and never married him but there you go 😂🤷🏻♀️
Second time around, 11 years later, my husband and I decided that we were footing the bill but had decided on nothing too grand and being the project manager I am, I’d spreadsheeted, budgeted and managed the whole thing to the nth degree!! I knew what we could afford and we worked in that budget. I couldn’t marry in church again as my first marriage hadn’t been annulled, was just divorced so it was a registry office job and a small hotel nearby.
I nearly fell over when my MIL offered the money to pay for the hotel package which was £1500. She wouldn’t take no for an answer so that mean we could then do some extra bits we’d wanted but before then, didn’t really need. Then my mum offered to pay for my dress and veil (£200 on a veil - I regret that 😂) so that freed up some more of our budget.
Ultimately, we never expected anything from either my parents or my MIL. My parents are retired so on a finite income (but are reasonably comfortable however not a reason to take the mick!) his mum was still working and she was in a comfortable position too but again we never expected it but it was gratefully received.
YANBU. I would just ask them if they’d like a contribution if you want to give something :-)