Hey hun,
Glad you're enjoyin your new puppy.
Well I have an 8 and a half month Cavalier King Charles Spaniel and have experienced similar with her. I think all puppies vary, but no I don't think it's too old for your puppy to still be doing this.
My puppy still wees when she gets excited, although she is getting better now. She no longer just wees for no reason in the house, she goes outside and responds to the word "quickly"! However she was still weeing on newspaper inside at 4 months, in fact she prob dint stop this til about 6 months.
So no need to worry, they do grow out of it. Just a pain whilst it happens!
Good luck huni and good luck with the wedding too!
Jess xxx