Finding guide was confusing as not labelled "Viator" and staff at gallery queue gave wrong instructions - messy but we got there. Queue-skipping was very efficient. Guide was knowledgeable and good value, but would have preferred to move a little faster and see a few more items in the time. Hearing the guide was a bit tricky also - maybe the earpieces that other tours were using would be worth exploring.
Arrived 20 minutes prior as advised. The guide passed us straight though into the gallery; we didn't have to wait for the full group to arrive, saving us 20 very precious minutes on our 1 action packed, amazing but tiring day in Florence. Very impressed. The regular queue went down the street and around the block; we walked straight in, literally. Excellent. The David is breathtaking, no replicas come close, it really is stunningly beautiful and well worth seeing.