In reply to M3MND:
Which part of Wales will you be staying in Amanda? In my area, NE Wales there are several summits suitable for a mixed age family.
The Horseshoe Pass above Llangollen has a pair of 2 point summits accessible from the same car park, NW-042 and NW-043. There is a cafe between the two summits and Llangollen is a lovely town to visit.
Near Mold there is another suitable pair, NW-044 and NW-051, further down the coast is NW-070 The Great Orme at Llandudno, more or less a drive on summit with cafe, copper mining museum, mountain railway, cable car ride, plus other attractions.
Anglesey offers 2 X 1 point summits NW-071 and NW-069 with some stunning views over the Holyhead Harbour. Day trips to Ireland are available via the ferries from Holyhead and Anglesey has quite a few family attractions.
If you do Great Orme, an easy 4 point summit is NW-040 and it lies just inland from the Orme.
These are just a few which I think would make for a good family day out, hope it helps. Have a good time.
PS You will need a beam on lots of the GW summits. The train on Snowdon only goes half way to the summit due to works on the summit, using the train would most certainly NOT be cheating.
73 Mike GW0DSP