Shradham near Marriage Date. Advise?

Sri:
Dear Sir,
Nothing harm will happen to marriage or married couple by doing marriages nearest dates to Masikam or shradham.
But there is a practice to avoid fixing marriage dates nearby shradham period, because many ‘niyamams’ have to be broken if done like that.
For example, the shradha kartha should not take bhojanam outside from one month before shradham.
See the pdf given, it contains all conditions about shradham (Dharma shastram Shradhdha Khandam).
You can not see any such points in it. Check item no. 26 in which the paranna niyamam described for kartha.
Bhagavan (God) and pitrus will not be happy if the karma is skipped without doing for this reason.
Also, everyone should remember, a shradham is done on every subha karyam including marriage in the name of “naandhi shradham”.