HELP!!!

Lbean22

I need to lose a ton of weight by June 16th. I just got invited to a family reunion but it is all family that I have never met before. They all really want to meet me and my kids but they are going to a lake and will be doing water sports and what not. I have not worn a swim suit in 7 years and want to. The problem is.....before kids I never had to work out so I have no idea where to even begin!!! Please help if you have any advise that could help. I understand the counting calories and the cardio part but its when it comes to weight training and firming everything that I am completely at a loss. I have 7 weeks and want to do the most possible!!! Thank you for any advice!