I'm on the second generation of the challenge and I have a few questions.
1) If an immortal purchases the Collection Helper or Moodlet Manager as a lifetime reward, can other immortals use the physical object that comes with that reward. Or can only the immortal that buys it use it? What if a mortal spouse buys one? Can the immortals all share it amongst themselves?
2) I think I may have made a mistake in my first generation. I had my founder SuperMax charisma. And that's the skill I counted for him when he ate his Ambrosia. Does this now mean that no other immortal can be allowed to get to level 10 Charisma? I'm worried because my founder's mortal spouse got to level 9 charisma just by talking to her friends. Does this mean that my next 7 generations of immortals are going to have to be hermits and not talk to anyone?
3) Does Ambrosia have to be made fresh? Can I have my founder's mortal spouse make a whole bunch of Ambrosia and store it in the basement? If I can do that, can only he eat the stored Ambrosia, or can it be used for future generations when they reach immortality too?
1 - If say, your Founder buys the Moodlet Manager then anyone can use it. However if it is your Unique Reward no other Immortal may buy one. Mortals are unrestricted to that rule, they can buy a Moodlet Manager and can give it for anyone else to use.
2 - Yes, no other
Immortal may reach Level 10 in Charisma. Mortals can since they are not governed by the Challenge's Requirements. No, your Sims will only learn Charisma by practising their speech in a mirror, reading a book or taking a class, or some Opportunities, so avoid those and you should be fine.
3 - Ambrosia can be made however you want, the favourite method is to find a Level 10 Chef have them make Ambrosia and store it on a Replicator when it is in the Bowl form since that is when you can replicate it, when Replicated it turns into the proper dish. So if you want your Founders Spouse to make it and store it that is fine, or you can have an Immortal who learns Cooking and maxes it to make it each time but that is not as safe as having a secure source of the dish.