During our 3 days visit in Dresden in July, we are thinking, or rather I am hoping, to have a couple of day trips. The options we have are the towns of Goerlitz, Meissen, Pirna ( and possibly a hike to Bastei). Since kids would opt for the Belantis Amusement Park ( its my sons birthday also during that period) so 1 day is booked for that, this leaves us with merely 2 days!!!. so it seems that we will only have one day trip. Any suggestions on which one to choose? We will have a rental car.