correct, Loews do not match third party's prices.
They told me they do not match third party websites.
I think it's interesting that Loew's wouldn't price match from Cheaptickets. They have a "Best Price Guarantee" on their website, which states the following:
"We think there's no one better to guide you through the booking experience and give you the most accurate preview of the Loews Hotels experience than us. But of course we'd say that. What you may not know is that we understand the need to shop around. You want the best deal on your hotel room and we want to make sure you get it. That's why we offer what we call our Best Rate Guarantee - our promise to you that we'll honor an online rate for one of our hotels that is lower than what we offer on our own loewshotels.com website.
If you find a lower rate on another website other than loewshotels.com within 24 hours of making your reservation, we will be happy to adjust your rate to the lower rate you found.* Simply call us at 1-800-235-6397 and we'll make things right by honoring the lower rate on the spot."
EDIT: They have a list of exclusions below that, which include
AAA (a rate not offered to the general public) and Hotwire/Priceline (where you don't even know the name of the hotel until you bid). Those exclusions make sense. However, in the fine print they also state that they don't match third parties that require "prepayment" or a significantly different deposit than they require, which I assume is how they rule out Cheaptickets.
As for adding in your children, others have experienced the same difficulties. Mousesavers has this to say about Loew's & Cheaptickets (I don't know if I'm allowed to post a link to Mousesavers so I won't try, but it's on their page for Universal hotel discounts, which is worth checking out anyway):
"CheapTickets/Orbitz has a glitch in their programming that overcharges if you list more than two guests, even if the additional guests are children under 18. Universal’s policy is that kids under 18 stay free, but there is a $25/night charge for each adult after the first two per room. Orbitz calculates the extra charge as though everyone in the room is an adult, which is incorrect.
To avoid incurring an extra charge, list no more than two guests on the booking, and add the children when you check into the hotel. You can call CheapTickets/Orbitz customer service and ask them to contact Loews to add the children to the booking, but it’s not essential. We have personally done this and there was no problem at all. Just make sure you book a room that can handle the entire party and remember to tell them when you check in, so you will get Express Passes for every person staying in the room."