ex-HRE turnaround
 

Forgive me for the double post. I'm hoping the ex-HRE x-ONE guru's can shed some light on a few points for me.

Next month, I'm arriving on the BA flight from LHR at 6:50am and departing on the BA flight to JNB at 2:50pm the same day. I have a few questions:

1) Do I have to clear immigration and customs if I do not plan on going into Harare?
2) Is it possible to remain airside for 8 hours?
3) Is there anything to do in Harare for 8 hours? If so, can anyone recommend a travel agent who could arrange a day tour?
4) I have read that foreigners are only allowed to possess a certain amount of foreign currency upon departure. How much are we allowed to carry out of the country? Do they strictly enforce this?

Many thanks.