@Rflong7 thanks for the idea. I just downloaded you Isle of Sims III.
Do you have any other recommendations?
I have a video series on the go (30 Grandchildren Badge Attempt).
In it there are 15 'children' who are to get married, move out and have 2 of the grandchildren each. Or at least that's the plan.
Since having such a huge household the mayhem made it impossible for me to organise any sort of romance between the now Young Adult aged children and their future spouse. I made the process into a game so it's taking a while to achieve.
In order to give each potential couple the chance to get to know each other before they decide if they will get married I'm sending them off on vacation.
So far 4 couple have had their vacation. They went to: 1. All 3 World Adventure Worlds; 2. Cornucopia by Shalua; 3. Isla Paradiso ( use the fixed version of that world by ellacharmed and I downloaded it from her Wordpress and I don't have problems with it although I haven't bothered to do much with the houses that need fixing and I kept all of the houseboats); 4. Oasis Landing Normal Future.
I have 11 more couples to send away on vacation. They live in the version of Cake Island that has houses but no population. I added a few of my own sims ( I have over 800 saved as Sims3Pack files) plus each of the children had/has an Imaginary Friend and I'm getting them to make their IFs real and kicking them out to add extra townies to the world. Each couple moves out to their own home when they return from vacation.
Maybe I'll try Isle of Sims III for the next couple. I haven't put it into the game yet but I am currently thinking of where I can send them.