Weather in July and best mid range hotel for family

Hello to the great forum members. I am planning to spend about 5 days from 2-6 July 2018. I am going to travel from Mumbai, India. First important question is how is the weather in the month of July on Seychelles islands? Secondly, which is a decent mid range hotel on Praslin Island? Mid to high is fine with me.

How does someone move around between the various islands? From Praslin to Make or Praslin to La Digue, etc?

What activities can be done considering a family with a 9 year old?