Spain holidays are a summer classic thanks to the glorious weather, the beautiful sandy beaches, the brilliant all-inclusive resorts. However, if you're planning a trip to mainland Spain, the Canary Islands or Balearic Islands in the coming months, then you'll want to take note of some of the new rules in place for UK tourists.READ MORE: Crafty Brits come up with new way to reserve sunbathing spots on Spain holidaysFrom bans on swimwear when you're not at the beach, to limits on how many drinks you can have throughout the day, Spain has been introducing some rules for tourists in recent months as part of a crackdown on rowdy behaviour.We take a look at the top five rules worth keeping in mind...Swimwear is fine on the beach or poolside - but head out to the shops in your bikini, and you could end up being slapped with a fine.In hotspots such as Barcelona and Majorca, topless men and women wearing bikinis face fines of up to €300 (£253) if they're spotted walking around away from the beach.This also includes streets adjacent to the beach, so keep shirts and cover-ups on until you hit the sand.If you're heading to Magaluf, El Arenal, Playa de Palma in Majorca, or Sant Antoni in Ibiza, be prepared for new restrictions around what counts as all-inclusive.Earlier this year, the Balearics government introduced a rule capping all-inclusive drinks at six a day - and only alongside lunch and dinner.This means three drinks per meal - if you want to have drinks poolside, you'll need to pay extra.Barcelona has a new law making its 10 beaches smoking-free, with fines of up to €30 (£25) for rule-breakers.Similar smoking bans also apply in other parts of Spain, and the islands.