I have questions about the 6 best friends. Do they have to be your wannabeimmortal's best friends at the time of eating ambrosia, or best friends at any point?
You need to have 6 Best Friends the moment an immortal eats Ambrosia for the first time because that number 6 is a requirement like all the other requirements for the act of eating the Ambrosia. So, if you'd get 6 Best Friends right away as a YA, and then 2 of them decayed to Good Friend when your Sim is ready to eat Ambrosia, you no longer have met the requirement.
If one dies, do you have to make another?
Not if a Best Friend passed AFTER you met all the requirements and ate Ambrosia for the first time. Once you have eaten Ambrosia there are no requirements to maintain friendship status. If you had 6 Best Friends a couple days before you were planning on an immortal eating Ambrosia for the first time and one of them dying, then it's no different than if you had let the friendship decay — you would no longer meet the requirements and would need to get another Best Friend.
You can only buy a camera (without cheating) on vacation, and since vacations are banned until the 2nd generation is young adult, isn't it impossible to get photographs of the founder as a young adult, and possibly as an adult, and the 2nd generation as all lifestages up to young adult?
Banning vacations until the 2nd generation was Young Adult was one of Pam's contributions. And I believe it was solely to prevent someone (like me, for example) from simply going to China on Day 1, getting all of the base camp books and returning to town with 20k from book sales. I hate changing something again since many players have started their Dynasties, but, curlybennett, you make an excellent point. What if cameras never show up at the consignment store? That does not really seem fair to me. All I need to do is ban the sale of China's base camp books and remove the vacation restriction and I think we'd be good. But, I want to make sure Pam has a chance to weigh in in case there are other reasons why she feels that vacation ban needs to stay.