driving
Avoid drinking while driving. While in the old time, you might be stopped for drink driving and could "settle" your way through with $10-$20, the policeman might now charge you with bribing attempt instead. As a consequence, you might be jailed for up to 3 months and the officer would get a stipend for US$1,000.
If you are stopped by police for any offence, just ask to write you up and pay the summon letter directly to the nearest bank. This would be a cheaper, faster and risk free settlement.
contact
There are several Internet cafes called "warnet" in Tanjung Pinang. You can find one at Bintan Mall in downtown 200 meters from the Ferry Terminal. Another place is the everpopular Ramayana Shopping Mall in uptown. Some hotels have Internet connections, but be forewarned, their speed is slow. There are also a few Internet cafes located along 'Tambak', which is within downtown, costing between Rp5000 to Rp6000 an hour.