Hello Rhodie: I'll try this again since my post was for some odd reason yesterday! computer problems.
There is a website for Tallinn that offers the Tallinn card scheme that includes tours, public transport, discounts, etc. and is sold from a 6 hour card to a 72 hour card. The walking and bus tours are only offered on the 12 hour card and greater.
You'll have to go to the website to see if you have enough time to make it worthwhile.
I'm also researching a trip to Tallinn, and found that you can buy the card at the airport. This means that your bus transport to/from the city is included in the card system.
You must go to old town which is a walled city not far but quite a walk from the pier. I had one day in Tallin and the old city alone took my whole day. The churches, flower vendors, shops, food, (don't miss Olde Hansa for the best food). Wear shoes that can take cobblestones and American walking shoes are not the answer. I never found out what was, but would guess a stiffer bottomed shoe that did not wrap around cobblestone. Women over there wear spiked heals and can run over the cobblestones faster than an a Olympic sprinter. I think the shoes have less surface on the rounded stones. Estonians dress up and everyone who was in jeans, sweat shirts, tennies and t's appeared to be from America. I seemed to notice this dressing trend all over Europe, especially the Baltic countries.
UPDATE: We bought the Tallinn card for 72 hours and found that we came out slightly cheaper than if we had paid for each individually. The bus/walking tour was a good overview and it takes you up past the olympic village along the coast.I'd recommend taking that for an orientation of sorts and then going back to the old town to see things not covered by it. We were there in winter, so I"m not sure if the summer walking tours are longer or not. It did take us into the churches up on Toompea but did not take us into the walls/towers. Because it was winter, none of the coupons were valid for us.
My only frustration with the old town is that shops are repeated every few blocks rather than new and uniqe craftsman or vendors.You see this in cruise towns and it really irritates me.They'd be better off supporting new local business rather than such a repeat that doesn't help the owners make a living.
The outdoor sweater markets are cheaper than Scandinavia, but remember to double check the QUALITY of the wool! There can be big differences! If you want the softer wool that is washable, you'll need to visit one of the permanent shops. There was a Crystal shop on Pikk that had the cheapest prices. All of the A-Galerii shops were very nice for one-of-a-kind pieces of work in many medias. The antique shops had a surprising amount of ww11 items that I found interesting and would be great for collectors. The Amber shops were very,very pricey.
We were the only American's among many Brits and Australian tourists. Contrary to the above post, we found that most people did wear jeans.....LEVI....in particular but also wore fabulous leather boots and even spiked high heels in winter across those cobblestones.
It's a great city and I would recommend just taking your time to wander and enjoy the architecture and photo opportunities!The Icebreakers were running in front of the Helsinki ferry which was quite a thing to see!