According to forum posts, purchasing tickets for public transport in Belgrade can be done at MojKiosk newsstands located throughout the city center. These stands allow payment for a range of ticket options.

Some travelers mentioned that an app named Beograd+ can be used to buy tickets digitally. This app permits payment via credit or debit cards and offers ticket options like single rides or multiple-day passes. However, users have reported difficulties with registering and purchasing tickets using foreign phones.

For many users, there has been confusion and difficulty with the new SMS-based ticketing system, which reportedly does not work well with foreign SIM cards. As an alternative, paper tickets are still available but are limited to certain locations in the city center and must be purchased at designated kiosks.

According to forum posts, several small companies offer door-to-door transfers from Belgrade airport to Novi Sad, with prices starting from €15 per person. For those arriving at Nikola Tesla Airport, a taxi to downtown Belgrade is generally priced at around 20 euros.

Some travelers mentioned that there are regular buses available for airport transfers within Belgrade. Specifically, the A1 bus can be used as a cheaper alternative to taxis, saving approximately €15 each way, but it requires local currency.

Travelers have called out the availability of a taxi booking desk at the arrivals of Nikola Tesla Airport, where you can pay a fixed fare voucher to avoid being overcharged. For city travels, it is recommended to have hotels or local establishments call a taxi to ensure a fair rate.

For those concerned about payment options, it is noted that the NIS shop at the airport, which sells SIM cards, accepts euros, suggesting that other services at the airport might also offer this convenience.

According to forum posts, some of the must-see attractions in central Belgrade include Kalemegdan Castle, the Sava and Danube rivers' waterfronts, and Knez Mihajlova Street, known for its vibrant atmosphere and shopping. Travelers have called out Skadarlija Street for its historic charm and lively nightlife, including nightclubs along the Sava River like Kućica.

For those interested in historical and cultural sites, the Nikola Tesla Museum and Saint Sava Church are highly recommended. The Museum of Yugoslavia is another significant spot that offers insights into the country's history.

For outdoor enthusiasts, Ada Ciganlija is a popular choice, featuring a lake with beach areas and a range of cafes and shops. Ada Mall's terrace also provides a relaxing setting for coffee and leisure. Additionally, exploring Zemun, Gardos Tower, and the city's various parks, such as Kalemegdan, can provide a pleasant day outdoors.

Travelers have highlighted the importance of experiencing the local vibe in various suburbs, emphasizing that Belgrade's charm lies in its diverse and less touristy areas. Engaging with the city's cafe culture and local markets is also suggested to get a real taste of Serbian life.

According to forum posts, travelers seeking traditional Serbian cuisine in Belgrade have numerous options. Some travelers suggested Cubura for its authentic grilled meats and rustic ambiance. Other recommendations include Restaurant Zavicaj and Restaurant Durmitor, both praised for their Serbian dishes.

Some travelers inquired about Halal dining options in the city. However, specific Halal restaurants serving traditional Serbian food were not mentioned in the available forum posts.

For those looking for a unique dining experience, posts suggest Kafana Pavle Korcagin, which offers dishes from nations that do not recognize Kosovo as independent. Another notable mention is Kafana ?, known for its long history and atmospheric setting.

A traveler expressed interest in sushi restaurants in Belgrade, particularly those offering an all-you-can-eat option. Specific sushi restaurants were not detailed in the responses.

One user queried about the best whisky and cigar bars in Belgrade, also asking for restaurant recommendations, but specific bars were not pinpointed in the forum responses.