If you go on the canal ride, be sure to check out UNIT 51 at the far end, near the car park, a great micro pub, selling good ales and good food, from a , well, sort of warehouse unit, with outside seating, very popular, sells beer from the micro brewery a few units down. Fun place to be.
Go the other way, and you can visit Folkstone, with a coastal track across the beach. The Harbour arm is also a good place to be, with live music, eateries, beer stalls, etc, also check out Kipps ale house, at the top of the old cobbled street, live music on a Sunday sometimes, and good selection of beers and Belgian type beers. Enjoy.