Flowers for an end of June wedding

Only daughter is hoping that her wedding on June 26th won’t be cancelled, and wanting good old Mum to provide :-
. bouquets for herself and three bridesmaids, 
buttonholes for six chaps, 
posies for the tables 
and larger displays for church and venue.
I must have had a bottle of wine or two before saying “OK”.
Colour theme is pink/mauve/white.
I should be ok for table posies because I got my sweet peas planted out yesterday(protected by old double glazing panels).
Going to team those with thlaspi green bells which have also been planted out this morning.
Hoping to have plenty of pink and white hydrangeas - will those be in full flow by end of June?
Any other suggestions gratefully received!