Late spring through early autumn gives you the best weather for mountain tours and castle visits. Winter can be dramatic but expect shorter daylight and occasional closures on high passes - check before you go if you're planning a winter trip.

Popular multi-day Snowdonia and castle tours fill quickly during school holidays and weekends, so booking 2-4 weeks ahead is wise. Last-minute availability exists, but you'll have better choice if you plan ahead.

If you're driving, yes - the valley roads are narrow and winding, and a guide handles navigation while you watch the scenery. Private tours let you stop for photos at castles and slate mines without time pressure, which most visitors prefer to self-driving.

Absolutely - most tours include hotel pickup from Llandudno or nearby Conwy. Check the specific tour details for whether they collect from your accommodation and which sites are covered.

Three patterns stand out: full-day Snowdonia mountain and lake loops, multi-day castle circuits (often hitting 3-4 medieval strongholds), and heritage tours focused on the old slate mining industry. Many combine all three - mountains, castles, and industrial history - in a single itinerary.

Yes, though it depends on your children's ages. Castle tours work well for primary-school kids; mountain walks vary wildly in difficulty. Check tour descriptions for age suitability and accessibility, and ask operators about family pacing before booking.

A full day covers either Snowdonia or a castle circuit thoroughly. Most visitors spend 2-3 days to combine mountains, multiple castles, and perhaps Bodnant Gardens or Anglesey without rushing.