Spurred on to start this by another thread discussing steam railways in SE England and we did go on the RHDR last week, and had a fantastic time.
It's only a few minutes drive from the M20 but lovely and rural. Plenty of parking at Hythe, spotless loos (with steps up but separate disabled provision), really helpful staff. There's not a lot to see at Hythe itself as the railway HQ is halfway down the line at New Romney - museum, shunting yards etc. Other stops include Dymchurch and the end of the line at Dungeness.
We bought a day rover ticket and had the choice of sitting in closed or open wagons. Worrywarts that we were with a wriggly baby and an excited 4 year old, we opted for enclosed...staff will help you fold and stow buggies in a separate luggage wagon.
The trains are all beautifully maintained mini steam or diesel locos, driven by volunteers. Carriages are a bit basic but spotless and everywhere we went the staff were so friendly and helpful. Disabled provision and baby changing is also very good, with a wheelchair accessible coach on all services and accessible loos at all the main stations.
We did not have time to visit New Romney after stopping at Dungeness for lunch (and failing to locate Derek Jarman's old beach hut...). Wonderful shingle beaches with fascinating plants and flowers though - and surreal backdrop of huge nuclear power station...
Dymchurch was a bit disappointing in that despite it being tiny, with some lovely old houses, almost everything else was "kiss me quick" tat and had seen better days. But ds and dd enjoyed the little beach (sand only at low tide).
We had a smashing day out and would recommend it to anyone.