We had to put in all the documentation(photos and commentry)of our artmaking practice...intention paragragh, what frame it comes under-explain... where your idea came from, evaluation, etc..
I am pretty sure the markers only look at your diary if they think that a years worth of work hasn't gone into it or if they don't understand the artwork at all... so there is a fair chance they wont even look at it... We had a student last year that clearly hadn't done a years work and they didnt even collect his diary... And i have to send mine, and they dont say to put your diary in...
I dont know if this has helped...made you feel any better..but i hope it has
goodluck with everything!