My mother also saying it very lucky for rain at wedding. Couple is getting lot of blessing if it raining and couple be very happy. I am thinking if it raining at wedding everything be spoil. I think couple happy because it their wedding day and they be together. not because it raining or not raining.
When it not rain in some part of Philippine they is doing manerwap. Rain dance. They dancing and asking god to make rain. At wedding also we doing dance. Not rain dance but money dance. Couple is dancing and guest is taking money and pin money on couples dress. It is way to give blessing to couple. I thinking that this dance better than rain dance. this kind of money blessing better than rain blessing. Couple can use money. How couple will be using rain?