OK, so not strictly a pregnancy question, but I figure that you lovely ladies will be sympathetic to my plight 
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DD3 is due on 11th July (ELCS so I can be sure of date). DD2 has her birthday in mid-June, for which I'm pretty much all prepared. DD1's 9th birthday is in mid-August, by which point DD3 will be only a few weeks old.
I'm trying to get as organised as possible beforehand but I'm struggling to come up with something that feels manageable for DD3's birthday. I was planning on doing something with her and a small group of friends, around 6 in total. I'd hoped that there would be something suitable on at one of the theatres but there isn't. Cinema and a meal out remain an option, but I won't know what's on until closer to the time.
Does anyone have any ideas? We've done sleepover / garden parties for the past couple of years but my reasoning is that this year it will be easier to take them all out somewhere for a few hours rather than have them in the house.
Thanks in advance.