Regarding meets we have a few run throughout the year. In fact there's one in november...link in my sig below.
Have a look through this thread, i had 3 is200's and an is300 in my time and you won't regret getting one., follow advice in the below thread and you won't go far wrong.
http://www.lexusownersclub.co.uk/forum/topic/69388-what-problems-would-you-advise-others-when-buying-a-is200/