If travelling to Belgium on Eurostar ask for a window front facing seat or check on their website. However, trains can be altered at the last minute so be prepared for seat changes.
For £6 each you can extend your Eurostar train ticket to any station in Belgium. This has to be done at the time of booking.
If you are over 60 and travelling by train on a day return after the rush hour, it should cost no more than 6 Euros to travel anywhere in the country. Most people in Belgium tend to speak English so you shouldn’t have any problems when buying the ticket.
You will probably have to pay for using the toilet in Belgium, even if you are having a meal in a restaurant or cafe. This is usually around 40 cents, so make sure you have some small change in your pocket.
Tap water is usually not free when you have a meal. Ask before ordering.
Remember, beers in Belgium can be extremely strong and locals tend to drink them in the same way as we drink wine. There are lots of famous Trappist beers.
Same of the motorways can get very busy particularly in the mornings and evenings so you might want to try some of the other main roads. The major routes seem to have got worse over the past few years with more and more lorries. Belgium side roads are often very straight and extremely quiet.
Take a boat trip on one of the many canals or rivers. Some can be very cheap, are extremely enjoyable and will let you see more of the countryside.
Belgian chips are some of the best in the world and can be purchased all over the country. They often cook them three times which makes them really crisp.
There is a long list of very delicious Belgian dishes on offer in restaurants and cafes including omelettes, waterzooi (a stew from Flanders) and mussels. Some locals like eel which I have to say, for me, is quite an acquired taste.