Don't expect super-fast internet. Coverage in the country (especially outside Yangon and Mandalay) is still limited and speeds are notoriously spotty and slow, even in the big population centers. There are now plenty of ATMs in Yangon and other major population centers so access to cash is not as much of an issue as it was previously. If you are carrying U.S. dollars to exchange, try to make sure they are in mint condition as there's a distinct possibility they won't be accepted otherwise. Try to book a hotel well in advance of your trip. Hotels remain in short supply in the country and can be expensive for what they are. If you don't book your preferred choice ahead of time you might be forced to pay over the odds for something substandard.