I applied Optimum Gloss coat yesterday morning and it looks fantastic. It will be in my garage for about 48 hours before I must take it out for work on Monday. It is supposed to rain on Mon, Tues and Wed. I know Optimum says you need to stay away from water for 24 hours and not to wash for 1 week.However I am concerned that the rain will diminish the finish somewhat. Can any professional detailer or anyone with experience help my OCD and tell me that after 24 hours I should not be concerned.