How can I manage both grand ceremony and electricity saving?

I am very confused about the arrangements, my brother is getting married this December, and we are planning to celebrate it highly in a 5 star hotel with a lots of friends and family members. On the other hand we are also thinking about how to save electricity, but without huge lighting the whole ceremony will be very dull.

What is the best way to get returns every year?

I have cash now which I kept aside for my child's education. He is getting into PP1 now. I want to invest the cash in Mutual Funds so that I can take some money year every year which would take care of his fees every year. Please sugges me the best possible way to do it.

Should I go for child insurance (or) mutual funds?

I have a 1 month old daughter. I want to save regularly for my daughter's education. I was wondering if I should go for a child insurance plan by any of the insurance companies (or) should I invest in any of the children mutual funds? Is there any other better way to invest?