Lottie I know what you mean about new groups and the mums - we go to loads of groups at the moment, so not really looking to get into some new ones. But I remember going to some kind of group when DTri's were only a few months old, and DD1 and DD2 were 3 and 4 - decided to walk to the group, start torrential raining on the way (baby brain too stupid to think = no coats) so all 6 of us turned up, looking like drowned rats, and all 5 girls screaming. Cue every single mother turning, silently, and looking us all up and down...
Decided to stick it out and ignore the other mums and just get on with it, but it lasted longer than expected and so it was time for DTri's feed - all 3 hysterically crying, but DD1 and 2 wanted me to sit with them rather than feed babies - so DD2 had the biggest, almighty strop. No one came to help or even ask if I was okay, I never went back. They were clearly all very cliquey and I wasn't welcome in their little club.
Just keep trying Lottie - we go to some lovely ones - sometimes you can tell the moment you go in whether you'll like it or not, other times you just need to get to know some people. We go to a toddler music group now that we've been to since Dtri's were really small - the second I walked in they were all so pleased to see babies that all 3 girls were taken from my hands and cuddled the whole time! 
Came off her and reminded DH that DT's will be 3 next month and even he nearly choked on something! We've decided that they need to grow up, and fast! Before they are 3 we want dummies off them really, and then once that is done we are going to start potty training. Beds are the least of our worries so they will come last.
Lottie DD1 and DD2 already have Mini micro's, but DD1's is too small for her now - and although they're expensive they are the best things we've ever bought and we know she will love the maxi. Once your DD's get going on their scooters, they won't stop - it takes them a while to get used to the leaning rather than steering, but then they suddenly get the hang. DTri's fight over DD1's small one and they're already brilliant on them - they are so good for 'nipping'!
P.s Welldone on J's potty training so far - sounds brilliant!
Ohhhh ALL I can't believe you haven't watched Tangled yet - is probably our favourite DVD at the moment! We are desperately trying to find a little Pascal for the girls - its a cute tiny lizard from the film, and they love him!