Indeed, I would think Graham is the man to speak to.
SRG say you cannot miss more than 10% of each course so as long as there are no exams that day etc I think you may be able to do it, as it is an exceptional circumstance, however, they do have the right to turn round and refuse it.
If you start on the June course you can work out where you will be in your college life.
10 wks Intro Course
2 wks leave
2 wks flying training
Discipline split....
If you go on the area course you are likely to be at an Area Control Centre on Ops Familiarisation when your wedding date comes round, which could well favour you. However, if you go aerodrome or approach, then you will be hard fixed to find a day where you are not doing simulator runs etc, which can be hard to catch up on as they are such intense courses.
Hope all goes well.