About marriage between Moroccan gay men and Spanish women?
Gay men generally only marry women to hide their orientation.
No. Morocco has no laws concerning the hijaab/veil/scarf. About half of Moroccan women wear the hijaab (especially the rural and older demographics) and about half of Moroccan women do not cover up (especially in the cities and younger demographics). There is no social stigma either way. Morocco has very few Niqab-wearers.