Wild Sites and Chemical Toilet Emptying

Hi everyone,

I will not take delivery of my first van until Oct but I have a basic query as the Club seems to advocate Green issues.  If you wild 'camp' in remote areas for a couple of days with limited access to chemical toilet disposal, is it acceptable to call into any club site purely to empty your chemical toilet?  If not where should you empty them?  Or Is crossing your legs the only answer!