Mysterious Island - Conclusion

Once your bridge is finished and you 'visit' it, the Challenge is complete.

On to the Raiders of the Lost Artifacts Challenge!

Mysterious Island (Part 2)

After making the Croissants (you should now be at 90%), you are now ready to build your bridge.

It requires $20,000 (ouch!), 30 hours and a minimum of 8 Sims.

Keep in mind that you cannot build two things at once and once you start construction you cannot stop or pause it. 

The Mysterious Island Quest (Part 1- first 80%)

Now that you have completed the Beach Front Homes quest (which I will come back to) it's time to get down to some serious infrastructure.
You get 3 days to complete this Challenge and the first 80% is very easy and quick (I'm under the impression all your time is going to be spent building the bridge, which I estimate to take 24 hours.)
You will need to get a tea pot ($500) a telephone (which you should already have from a previous Quest, I recommend the expensive one), a computer (which you should already have) (I use the $1,500 2 star model) and a World Globe ($10,000)- yep $10,000! You need to start saving now.
*You will watch the news (4 minutes) call the construction company (about 10 minutes) watch a special on T.V. (about 15 minutes) call the construction company back, mail a letter (4 seconds), call the construction company again (15-ish minutes), use the computer (about 8.5 minutes) then make some croissants (18 hours), which is as far as I have gotten today.

*I may have the order a little out of place, but overall the first 80% should take only about an hour.

Happy building!