Unfortunately when touring on a package tour, we often find ourselves on an organised guided tour. There is probably nothing worse when trying to take photos! One tip I have learned over the years is to position myself either at the very front of the group or the very back. If you are at the front, you often have the opportunity to take a couple of photos before the place is swarming with tourists. Likewise, if you hang back from the group they will move on allowing you to photograph before the next group arrives.
I am a retired IT professional. I use my spare time by travelling and taking photographs. I love wildlife and history.