宿雾航空在线值机 后可否提前直接入关？

没有托运行李，又带着孩子，因此想web check in 之后提前到达机场直接入关，没问题不？本来觉得是没问题的，不过宿务后面的说明里有这么一句：Once you have checked-in online, you just need to be at the designated counter at least 45 minutes before estimated time of departure. Otherwise, your documents and baggage will no longer be processed. We strictly close the boarding gate 15 minutes before estimated time of departure so allow ample time to clear through Immigration and security checks.

这45分钟到达指定柜台的意思是不是登机口？
请前辈回答。