Visitors on the Strip look like local searchers to your account
A valley built on hospitality means a large share of the people physically inside your geo target this week will be gone by Sunday.
Location settings decide whether you buy those clicks. The default in most accounts includes people who show interest in your area rather than only people who are in it, and interest is a loose thing in a city the whole country visits. Set targeting to presence, and check it again after every account change.
Radius targeting compounds the problem. A circle drawn from an office near the Strip corridor covers the resort corridor, the airport and a stretch of Mojave desert where nobody lives. Draw the target from where your clients live instead: Summerlin, Spring Valley, Enterprise, Henderson, North Las Vegas, Centennial Hills.
Exclude the places you cannot serve, even when the clicks look cheap. Traffic from outside Nevada on family law terms is rarely useful to a firm that files in Clark County, and it will consume budget quietly for months if nobody looks.
Check the geographic report monthly, not quarterly. It is the single fastest place to find waste in a local legal account, and the fix takes minutes once you can see it.