Ok, since they are asking...
Withdraw their application...I think that is a good idea that might be more trouble than it is worth. My guess there there will be fee for withdrawing if implemented.
Login on to account...This makes sense but so does email notification. There is no prefect system. Pick one and support it. There are always going to be folks complaining.
Most requested days...Not a big deal. They are Thursday through Sunday between July 1st and September 30th.
Range of dates...This makes a lot of sense but my guess this is nightmare for IT people.
Unwanted dates...Once the lottery is finished, they should be handled just like other forest reservations. That way you will not need to be a rocket scientist to figure out the rules.
One trip only...this makes sense. Hard to enforce is my guess.
Acceptance...Another sensical idea if used. I think it might help with keeping the low skilled off the mountain early in the quota season.
Unwanted dates...They should all be released immediately after the lottery, not staggered like the past.
Payment...Charges should be authorized upon receipt of the application. This would make people think twice about putting upwards of $1,000 against their credit limits.
One trip per leader...Unworkable. People will just use someone else within the group.