You'll be disappointed all my childhood memories such as Tree Walk, Mr Marvels, Atlantis, Scalby Mills Fair, Kinderland are long gone ...
They do still have the open top buses. Apart from the OAT, Alpamere and Sealife Centre there hasnt been much investment in the North Bay (Kinderland/Mr Marvels and Atlantis sites have been left untouched with numerous failed developments which have failed to get off the ground), there's just holiday apartments/retail units where the corner cafe used to be. The indoor baths have just been demolished too.
Same story on the South Side ... Crows have taken over the amusement park, but nothing has been done with the Futurist site. Flamingoland appear to have pulled out and a large Observation Wheel currently sits on the site.
For fish and chips .. North Bay Fisheries near Peasholm Park. Theres limited free street parking just up from where the indoor baths used to be (its about £7 to park for the day in the council car parks) im not aware of any free parking on the South Bay before 6pm (its all disc/permit zones)
The Mere is a nice walk if it hasnt been raining
If your up as early as Monday get yourself to Whitby for the Regatta Fireworks Finale around 21.45