Crowds before & after WDW Inline Marathon?

[heffalump9]

How crowded is it before and after the WDW Inline Marathon? April 30th is our last day at WDW, will this effect check out, PS availability, larger crowds at other parks since this coincides with Grad Night, etc. etc.

 

[ms.ojo]

Anybody have experience w/ this from a past year?

 

[heffalump9]

bump