My mother has asked this - this is surely unreasonable

[BarrioQueen]

My mother and stepfather are due to be seeing in New Year with her sister and husband (my Aunt) friends in a pretty holiday cottage in the Lake District - it is fairly remote apparently. The cottage - not stayed in before is much nearer to them than my Aunt who lives a long drive away. They are staying a week.
My Mum isn't great at technology - so paid my Aunt half by cheque and my Aunt booked it. However my Aunt has not yet sent any details of how to find the cottage, address etc. Though my Mother does know the name of the village it is in. Apparently my Mum has sent her 4 messages or phone calls (requesting this info) soon after Christmas but the information has not been forthcoming and my step father understandably is wishing they'd not booked.

My Mum is asking me to contact my Aunt - I've sent her a text asking for the info - on how to get into the cottage and address but despite a long message all about the joys of Christmas no info has been forthcoming. I don't see the holiday cottage giving this info to the person who is not on the booking form as they would surely revert this back to the booking person - as I had thought of telling my Mum to contact them.
My Aunt is a bit of Primadonna - but really she's being unreasonable isn't she? Presumably there must be some reason why she is 'gate keeping' this info? My Mum is worried about driving in the dark, and concerned that she won't be able to access the cottage until after her sister arrives. Her sister has form for arriving to events really late - she missed my wedding service for example.
I guess I have answered this question - but aside from telling my Mum never to arrange a cottage booking with them again, how should she proceed? My Aunt seems to be being deliberately obstructive? My Aunt is not picking up the phone, and being unspecific in messages. Grrr. I'm going to stay out of this and maybe end up with my Mum for new Year!
This is bizarre behaviour isn't it???

Well done to the cousin—they saved the day!

I'm glad it's all sorted. Well done your cousin.

I hope you have a fabulous New Year!

I haven't seen or spoken to my Mother in 14 years. Not everyone has the blessing of a healthy maternal relationship. There's always a valid reason even if you can't imagine it.

I am glad it's all sorted. I hope your SM manages to enjoy her holiday and I hope you have a great night out.

Honestly I’d send the following text to the aunt:

You haven’t booked it, have you?

Your Aunt sounds exactly like my sister - a fu%#ing control freak!

Glad it’s all sorted! A lesson learned for next time - no more trips away with your aunt!

Glad to read that it's sorted, hope your Mum nabbed the best bedroom!

Sounds like
a she hasn’t booked anything
and/or
b she’s spent the money.
If anyone apart from the person on the booking form calls won’t GDPR prevent them from discussing it, unless, of course, they’ve never heard of GDPR.
Can you look on line and see if is actually booked that week; that’ll give you a starting point.

As your Aunt lives further away maybe she wants to be in the car and en route to bag the best bedroom 🥴
would that be potentially in character OP

Just spotted it’s all sorted.
Have a lovely New Year OP

Quite often provided last minute though. I've been to a few recently where I didn't know until a few hours before arriving how I would get the key. It's a bit stressful actually.

Have a fab night OP x

I don’t know if controlling is the right word for her actions here. I think cruel perhaps? She obviously was enjoying the fuss and causing a scene. She likely wanted to cause disruption to your mum and wasn’t fussed if your mum would go or not.

I bet your aunt was planning on going with friends but they fell out, so your lovely mum was conveniently drafted in. Sounds like your aunt is pissing off people left, right and centre!

Happy New Year to you too @BarrioQueen .

The next time your mother starts going "Oh, poor Aunt/Sister..blah blah [insert why she is being wronged this time] blah blah" you will be able to remind her what you had to do to get the details of the NYE holiday that she paid to go on and how reluctant and stubborn your aunt was in sending on some simple details etc. to her sister. Perhaps your mother won't be saying "poor aunt/sister" as often.

I've recently stayed in a place that provided the check in info (lockbox location & code) only a very short time before check-in opened (3pm).
Quite annoying.
I did know its address, tho.

Gosh the weather has been vile up here in Penrith today - I’m pleased your mum had safe travels and enjoyed her lunch! Not a day to be out and about at all!

and would like a refund immediately so she an rebook for herself !

When you have to mother your mother ..
it Comes to us all eventually but I am nearly 70 and it’s not a decrepit helpless age . My point being there’s something going on with the dynamic between the two sisters that you may not even know about .. maybe ?

What a pill your aunt is. Hopefully mum will make the best of it.

Wish I could have one last New Year’s Eve with my lovely departed mum

Although it isn't your priority, its such controlling behaviour to withhold information and make someone ask more than twice.

Its extremely rude and disrespectful to do this to anyone let alone older people who might like to plan things well in advance.

And you do this 'often'. How nice you sound..........

Phone her

OP, hopefully your mother has learnt a lesson.
Her sister is a bitch and now at a loose end because she has repelled so many friends.
Point out to your mother she really doesn't want to be getting more involved with her sister, if she wants a peaceful life.