The Sydney Sea Life Aquarium is a fabulous learning experience to encounter Australian sea and wild life for the first-timer. It is definitely worth the time and effort, and this was a good price for the package. But the Aquarium in Manley was a major waste of time I see that it is no longer even offered as a part of this pass. Also, there was no indication on the voucher as to how to actually get to Manly via ferry, which was an extra added expense. But on the bright side, once you arrive in Manley, it is such a cute, quaint little town that you will find decent shopping, dining, and beaches to help you forget about their tiny outdated aquarium. I did not choose Madam Tussauds I'm from the States and don't even visit them at home. The Sydney Tower Eye was a good experience, with great views of Sydney. But there was some hassle when I tried to enter the exhibit. It was my last time using the pass, and when I arrived, they told me that I had already entered the exhibit on an earlier date. It was a little disconcerting, but I assured them that I had never entered the place before, so they honored my voucher. Luckily, they were kind and fair to me, otherwise I would warn others who purchase these multi-event attraction passes to watch out for this. All in all, I feel this pass was a good deal for the money, but I believe Viator should offer more explanations on how best to use these multi-attraction passes, i.e. extra fairs involved to get to the attraction, etc.
This was the best place to get this pass as it was slightly cheaper than buying it on line direct from the attractions. We purchased a 4 attraction pass and this was great. Because Sealife, wild Life and Madame Tussauds are all together you can easily go from one to the other. Afterwards it is great to enjoy the atmosphere and have a drink and a bite to eat in Darling Harbour. The Sydney Tower is not too far away and is an easy walk from Darling Harbour. We did this the next day and tied it in with shopping as it is based right in the centre of the Pitt St Mall. This tour is well worth it esp if you have kids with you.
The Manly aquarium isn't great. The others will take an entire day if you plan to do them together - Good thing is that 3 of the attractions are located at Darling Harbour so you don't end up walking too much. The Sea Life Aquarium is highly recommended and so is the zoo It does hold it's own despite the larger Featherdale and Taronga options. The tower isn't the best esp if you consider the Burj Khalifa Dubai or Empire State Building NY or even Marina Bay Sands Singapore viewing decks but that's what's available in Sydney. Madam Tussauds is pretty much the same all over the world.
Special Tip: The wildlife zoo closes earlier than Madam Tussauds so make sure you know the operating timings and plan your day.