Well up stairs there's, BK, McDonald's, Abra, and other outlets upstairs, but not of the BK and McDonald's variety, as you walk up into the main entrance of liffey valley, on the right of the shopping center there is loads of places to eat,cant think at the moment what the names are but definitely 4-5 places to eat, so I am sure definitely you will find a place to eat with toddlers, sorry I can't remember the names of the places out side, but there is an eddie rockets outside and let you know, one inside on the left as walk into the main entrance of the shopping center

Never tried getting there by Public Transport, only by Car. The Centre is fine but not a patch on Dundrum Shopping Cenre.

Shopping in Dublin City is fun, Jervis Street Centre for younger customers, Grafton Street for more expensive choices. Dublin City has a good buzz. Dundrum shopping centre is popular but personally I hate it, the same shops as Dublin City but the more expensive ones. Liffey Valley is good to shop, bargains and choice.