Apex domains cannot have CNAME records.
Question and response
Question
dig cruiseandvacationperks.com. NS
Answer
cruiseandvacationperks.com. 5 NS ns1.cruiseandvacationperks.com.
cruiseandvacationperks.com. 5 NS ns2.cruiseandvacationperks.com.
Authority
The response has no authority records.
Additional
ns1.cruiseandvacationperks.com. 5 A 170.130.202.146
ns2.cruiseandvacationperks.com. 5 A 23.231.64.34
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0