Make sure you work out- Google Earth was useful- how to get there. It's not as easy as it looks and, if there is a boat just in, then you don't have time to dither !
As said above, it is free after 6pm but there is no bar to you arriving before that. You have to get a ticket from the machine but I can't remember it being very expensive.
There is a chain hotel right at the end- next to the bollards that separate Marine Parade from the main road. It is less noisy if you do not go right to the end and are away from the hotel and main road.
We could not fit in a parking space at an angle to the pavement ( these are mostly up the end nearest the hotel )and took up 2 of the parallel spaces but the parking warden we spoke to seemed to take it in her stride.
It's also worth checking you know how to get out and back onto the main road next day.