DS is friends with a lovely little boy in his class. DS was off poorly Thursday and Friday. We've just received a party invitation today (3rd) for Saturday (8th) between 11 and 1.
DS has a practice Taekwando session for his grading at 10 on Sat for 45 mins.
Would it be rude to decline,or to say we will be there but perhaps not til say 11.30?