I think the main thing is that your D gets to have the best possible birthday. So, if he wants to come and not share rooms, just book one for you and your D. He can either make his own arrangements, or you could offer to book a single room for him too...

T 13 M 7
Me 48 H 46
SS 15
BD 7.14 PA
D final 5.16 (H filed)

We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus