We will be in Edinburgh the last day (Sat) of the tattoo. Can I still expect taxis to be readily available to/from port? Ship is in port 7-6, so I believe that is before the actual event starts, but do expect it to be quite busy. Not interested in a tour, just want to go myself, but will have my elderly parents with me. Is there a better/different alternative for transportation, not knowing ahead of time when we will want to return to ship?