Can someone explain if I am booking a room the right way? Their family plan states:

Family Plan Policy

Children who are 12 or younger sleep for free in the existing bedding of a room shared with a paying adult. Rollaways, child rollaways and cribs may incur extra charges.

So my interpretation, which may be incorrect, is that my 7 and 10 year old can stay for free with me. Will we be fine in a room with 2 double beds? It won't let me book a room with 2 adults and 2 children. But I can book a room with 2 adults. Is it a limitation of occupancy? Any suggestions?

At the Westin Osaka, I can choose a room with 2 adults and 1 child, but not 2 adults and 2 children. Same occupancy limits?

Thanks.