Yes.
His Military Dress uniform.
To wear one's uniform for your wedding or not is a personal choice. If the wedding is on-base; a military wedding where the bride and groom come from the church under the crossed swords of their fellow officers is most impressive - if that is what the bride and groom want.
his military one
Some brides might want to wear their uniform, but most grooms wouldn't like that. She should wear traditional wedding attire.
wessex yeomanry
No. If it's not actually a component of the uniform, it's not to be worn with the uniform.
Yes, the British wear hats, not all the time though, if it's cold or a special occasion such as a wedding or ladies day at the races, hard hats on building sites, chefs hats in kitchens, as part of a uniform like the Police wear or if we just want to look smart or cool.
Prince William wore the uniform of Colonel of the Irish Guards on his wedding day.
On his wedding day, Prince William wore the uniform of the Irish Guards, of which he was made colonel, earlier on the the year.
There is no compulsion for a wedding dress. It is the bride's day and she can wear whatever she finds herself most comfortable and beautiful in. Mostly, the women in the military prefer to wear their uniform on the wedding reception but there are many others who wear a long gown or the traditional outfit such as a lehenga, saree, frock on their wedding day. In western culture, the bride mostly wears a long white gown which is also the main traditional wedding outfit in the Christian community. On the other hand, In an eastern wedding culture, there are usually a number of different wedding functions. In such a case, the bride can wear a lehenga, frock, or maxi as her traditional wedding wear, and then on the last function, which is the wedding reception, she can wear her military uniform that can be used as bridal wear. No one should be judging her on the choice of her bridal wear. It is her big day and she should be free enough to choose whatever she likes for herself.
If its an unconventional wedding then it may be excepted as quirky, but traditionally speaking, no, it would be a breach on the uniform. Also, finding a wedding cake with a bride and groom(a boy) statues dressed in a wedding dress would be difficult.that would be a little bit strange. but it certainly would be a good memoryBut it is your wedding wear what you want