Don't know if this adds much but had a look at a magnification of the sign in the photo and the hotel was an ACU hotel - Auto Cycle Union. There's a couple of cycles behind the horse in the photo. The note on the photo suggests it had something to do with a wedding but people wore corsages for many other reasons too so may not necessarily have been. Maybe they'd been to the hotel because it was connected to some ACU special event? Although they do seem to have luggage with them.

And here's the ACU website link. Formerly the Auto Cycle Club, it acquired its new name 'Auto Cycle Union' in 1907. Viv.
https://www.acu.org.uk/general/about-the-acu.aspx

And here's the ACU website link. Formerly the Auto Cycle Club, it acquired its new name 'Auto Cycle Union' in 1907. Viv.
https://www.acu.org.uk/general/about-the-acu.aspx