[Remind-Fans] duration of an event

[Vita Cizek]

Hi,
I have two questions:

1)
Lets assume I have a periodic event like this:

REM 6 Jun 2010 +2 *21 MSG Some event

The event lasts 3 days. How can I be reminded every day during the event? 
I suppose UNTIL can't solve this, because there is no fix deadline.

2)
Is there a simple way to remind me like 15 days before, 10 days before and the last 5 days ahead of an event?

Thanks,
           Vita Cizek

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