Wedding Forum - Asking guests to pay for rooms?...

I have found my perfect wedding venue, I have been to see it and have fallen in love. I am currently waiting on the final quote but I am certain it will blow my budget out of the water. So I've been thinking of ways to make it work.
The venue comes with accommodation for 40 people and we will have to pay for these rooms whether they are used or not. However I was thinking, in order to claw back some money I could ask my guests to pay £50 per adult per night. Even if I can only fill the rooms for one night (we are hiring the venue for two as myself and my bridal party, my h2b and his groomsmen and a couple of close family members will be staying the night before) this would claw back about £2000-£3000.
Is it acceptable to ask guests to pay for accommodation which we would have paid for regardless? Or is it not done? And if it is acceptable is £50 pp pn a reasonable price (considering the wedding will include a 2 course meal a buffet entertainment and it is on new years eve so is basically a glorified new years eve party). I personally would be happy to pay this if the shoe was on the other foot but I don't want to appear to be cheeky in asking for money.
TIA for your oppinions

Yep I would do it per room instead of per person otherwise you might only get £50 per some rooms if single occupancy. How much is it usually per room at the venue? Think our room was about £150 per night as a couple and £110 single occupancy. You don't want to go charging more only for the guests to find out and get stroppy.

Thank you, I thought it was ok but I don't want to put people off by asking. The venue is a manor house and only 4 of the rooms offer b&b (one of which is the honeymoon suit) but as I plan on allocating these rooms to myself and my h2b (obviously), my dad and his wife (who are partially funding my wedding) my grandparents and my nan (who between them raised me from the age of 3) I don't intend on "charging" them extra for the breakfast. The rest of the rooms are in cottages separate to the main house and offer s/c facilities but all the rooms are stunning and if I were a guest I would be pleasantly surprised at what I would be getting for my £50pn!!!

i think this would be fine people tend to stay over at weddings anyway and pay more than that xx

We get 20 rooms at a discounted price and if they all get booked then anyone who hasn't booked quick enough will have to pay full price. Our guests will be paying for their own rooms whether they are discounted or not.

Yeah I think charging per size of room is a good idea as well, it is how hotels work it

Just tell them if they want a room at the venue it's this per night, but need to book and pay through you as rooms are already reserved through you for the use of your guests.

We are asking our guests to pay for their rooms if they want to stay.. I know they wouldnt even expect us to foot the bill for them to stay. Our venue has given us a flat rate of £135 across all rooms and we are asking guests to pay the full price.. They will get plenty of notice with the invitations, and to be fair, most people already know so have plenty of time to save if they need to. X

Thank you so much for all your responses you've made me feel a lot more positive. After having a think I figured I could ask £150 for a twin/double room for 1 night or £200 for 2 nights and for a family room £175 for 1 night or £250 for 2 nights, this would work out at £2800 if every room is taken for 1 night and £3800 if every room is taken for both nights, although I'm still waiting on a quote from the venue (not very patiently, I want this place so much!!) this may make it possible. I have checked some of the prices for other local accommodation and the lowest is £70 per room per night add a taxi on to that (at NYE rates) it would make it £100 minimum so I'm hoping people won't think I'm asking too much.
Thank you for all your opinions!!!

It all depends on what the venue is asking as it is exclusive use so the rooms are included in the price regardless. Once I know what the price is I will then approach my close friends and family asking if I were to book this venue would they be willing to pay x amount to stay there and then work out what the venue would cost minus the amount I would be guaranteed to get for the rooms and work out if it is plausible. Then when the time comes I find that I am able to fill all the rooms and would make back more than I originally thought I would put this back into the wedding by providing extra drinks or more entertainment or something (meaning that the guest would be getting more for their money so to speak). If that makes sense?

i would also do per room, our venue charges per room its £99 for double room with breakfast or £69 for single room with breakfast. The guests that are staying know they are footing the bill for this themselves. The only ones were paying for is both our parents to say thank you for everything :))

I wouldnt expect the bride and groom to pay for me - its my friends wedding in August (I'm bridesmaid) and I'll be paying for the room for myself and H2b i wouldnt expect her to pay for me xx