Firstly MrMichael, there are no words I can add that will help with your awful news. I just hope that your oncoming journey allows at least a wee bit more of your bucket wishes to be realized.
And on that point, have you considered looking at a serviced apartment , and hiring a fine dining catering company.
I recall my mates company put him up for the weekend in a plush apartment overlooking tower bridge, looking west. Alas I can’t remember the name of the establishment.
I’m sure whatever you decide you’ll create a valued memory for all that attend.