If you are unsure, go ahead and reserve the cottage for the two of you. You may add additional guests (subject to your accommodation’s maximum occupancy) up until 10 days prior your arrival. On the other hand, if you do reserve it for 4 and two can’t come, there is usually no fee for dropping the number of guests in the B&B as long as you are still renting each suite agreed upon for at least two people. Please keep in mind, the party size must be finalized/confirmed 10 days prior to arrival.