Actually, Moiz, despite the scale of Snowdon, there is a rack and pinion steam railway that takes you right to the top of the mountain - where you will find a newly-refurbished visitor center and cafe. If time is critical, weather less than optimal and/or you want to take the family, the railway is a brilliant option. Not cheap, but what is these days?
I've been to the top of Smowdon 3-4 times; once by railway. Great views and photo opportunities all the way. You will need to keep the little 'un on a rein, though, as some of the drops are MASSIVE. On a clear day, you can see the Isle of Man.