The Short Answer
An OTA booking typically forfeits preferred-partner amenities (upgrade priority, breakfast, credit), can carry stricter cancellation terms than the same room booked direct, and often makes it harder for the hotel to add benefits retroactively since the booking exists outside the hotel's own guest-recognition system.
The headline price is the easiest thing to compare across booking channels, and it is also the least complete comparison available. Several real costs attach to an OTA booking that never show up in the price itself, and they only become visible once something needs to change.
The amenities you don't see you're forfeiting
Preferred-partner and consortia benefits, room upgrade priority, breakfast for two, a property credit, VIP recognition ahead of arrival, attach specifically to bookings made through a qualifying channel, a hotel's own direct booking with the right rate, or a preferred-partner advisor. An OTA booking, even at an identical price, generally does not carry these, since the hotel has no commercial relationship with that specific reservation beyond the standard commission it pays the OTA for the booking itself.
Recognition is the quiet, structural loss
A preferred-partner booking typically arrives at the hotel with a note attached, flagging the guest ahead of time with context: an occasion, a preference, an advisor's standing relationship with that property. An OTA booking arrives as a reservation number with no such context, since the OTA's relationship is with the booking transaction, not with building an ongoing guest relationship on the hotel's behalf. This doesn't show up anywhere on a receipt, but it is precisely the mechanism behind why two guests paying the same rate can have visibly different stays.
Retroactively fixing this is harder than it sounds
A guest who books through an OTA and later wants preferred-partner benefits applied generally cannot simply request them after the fact. Programme membership attaches to the booking channel and rate type at the time of reservation, not retroactively, which means the fix, where one exists at all, is usually cancelling and rebooking through the correct channel, itself only possible if the original OTA rate was refundable.
Where the cancellation terms compound the problem
As covered elsewhere on this Journal, OTA rates more frequently carry non-refundable or restrictive terms than a hotel's own standard rate. A guest who discovers, after booking through an OTA, that they've forfeited preferred-partner amenities often finds the same booking is also non-refundable, closing off the option to simply rebook correctly.
The OTA booking's real cost isn't hidden in a fee line item. It's hidden in what doesn't happen: no upgrade priority flagged, no advance note to the hotel, no easy path to add either after the fact.
When an OTA booking is still the right call
For a short, functional stay where none of these amenities would meaningfully change the experience, a one-night business stopover at a property with no preferred-partner participation, the OTA's convenience and occasional price advantage can be the reasonable choice. The comparison matters most at exactly the properties and stay lengths where preferred-partner amenities deliver real value: multi-night luxury stays at participating hotels.
Our position
Before booking through an OTA for a stay of any real length at a luxury property, check whether the same rate is available through a preferred-partner channel at an identical price with amenities added. In the large majority of cases at participating hotels, it is, which makes the OTA booking a strictly worse option with no offsetting price advantage.