Second solemnisation on Actual day

Hi all❤️
Was thinking of having my solemnisation tgt with my AD wedding dinner but as my Fiancé’s twin brother is planning to have his wedding dinner the same timing as us, we are thinking to postpone the AD dinner ☹️
But as my fiancé is planning to apply for a resale flat asap , we will need to ROM before applying .☹️ I’m actually very keen in holding a solemnisation ceremony so I was wondering if it’s still possible to hold the ceremony tgt with the postponed dinner ?
Or is a solemnisation ceremony not that important after all.But it has always been by dream to have a solemnisation ceremony
Would really need some advice
Thank you all❤️