These are the 5 things you must do before Dreamforce, the 170,000-person tech conference taking over San Francisco this week

Dreamforce is known for its extensive swag, and branded portable chargers are a popular option across conferences this year. But when it comes to keeping your phone charged, it's better to be safe than sorry.

"Definitely take a portable charger," said McCarthy. "They run down over the year, so I get a new one for Dreamforce."

While Dreamforce has plenty of wall outlets where people can plug in their laptops or chargers, McCarthy said that he spends so much time running around, it's not practical to sit around waiting for a phone to charge.

The Dreamforce agenda builder went live in early September, which was a pretty big deal for veterans of the conference.

The Salesforce tool lets attendees browse the dense session offerings and reserve spots on their schedule. While reserved spots are limited, a number of the sessions also have room for walk-ins, or take extra people once it's clear that people who reserved a seat aren't going to show up.

With over 2,700 sessions (and a limited number of seats), many attendees feel compelled to pack their days with back-to-back sessions. But this is not advised.

"With the conference prep, I think people should really spending time with the agenda and figure out ahead of time which sessions they want to get," said Bryan Parker, CEO of DoubleDutch, a mobile app developer.

Salesforce offers sessions for many different industries, job titles, products and levels of expertise. So there are already several criteria that help attendees focus on the best sessions for their own needs.

McCarthy suggested that attendees sign up for only two or three sessions a day, so that they can spend the rest of the time networking and exploring some of the more passive learning experiences that the conference has to offer.

"You've got to prioritize the things you want to explore," McCarthy said.

After a day of sessions and meetings the real fun begins: the sponsored parties where your event badge gets you access to open bars at extravagant locations.

Those in the know download Partyforce, an app created by the app developer DoubleDutch as a way to organize Dreamforce nightlife.

Last year, the DoubleDutch team even had scouts at parties throughout the city to keep the app updated when parties get filled to capacity.

"The parties range from wine and snacks, to just full on parties with headliner-type bands," said Bryan Parker, CEO of DoubleDutch.

Since the parties are put on by sponsors, not Salesforce, DoubleDutch has to scrape a ton of different companies' websites to compile its database. Last year, its scouts also added in parties that they heard about by word-of-mouth.

"The best one was Pardot's party," said Ben McCarthy. "They had Flo Rida in a big theater, and it was absolutely mad."

"I don't really like Flo Rida but I couldn't speak the next day because I was singing to all of the songs," McCarthy said.

Salesforce also hosts its own concert every year for an event they call Dreamfest. This year's performers are Metallica.

As the company says on its website, "Dreamforce isn’t Dreamforce without epic concerts by some of the biggest names in music."

If you haven't already booked a place to stay, be prepared to pony up a lot of dough. While some of the luxury hotels near Dreamforce have rooms available for upwards of $900 a night, others like Hotel Zelos have been close to sold out since registration for the conference opened in June.

“This year’s Dreamforce will be one for the record books," said Sietse Nabben, the general manager of Hotel Zelos, which has 202 rooms just blocks from the Moscone Center. "The event is unique in that, compared to other large city-wide conventions, attendees tend to book hotel rooms, meeting spaces and restaurant reservations very early."

Those who prefer Airbnb are also out of luck. Only 15% of listings in San Francisco are available for the dates of that conference, and that gap will likely tighten as Dreamforce gets closer.

"It’s an incredibly busy time for hospitality in San Francisco generally, especially for Hotel Zelos and hotels like ours in the Downtown/SoMa hub that are located within walking distance to Moscone Center," Nabben said, adding that his staff prepares for Dreamforce week for months before the event.