When you say "East Coast" what do you actually mean? EC covers Maine to Florida with 13 states in between. Even that breaks down to about 4 dif regions...
You can see by my signature that I am from back east, have been hobbying for some 30+ years, predominantly NY, but also spent years in the south, NC to be specific, but have traveled extensively up and down the whole coast on bike, truck, AmTrak and flight.
What Swedish_Hottie said above is true about lodging, but that is mostly in NYC and DC. Other metro areas along the coast can be had inexpensively lodging wise if you research ahead of time.
A quick tip on that...Go to the site i4******.com The "***" is whatever city you are going to visit, (such as i4vegas, i4san francisco, i4philidelphia, i4atlanta, etc) it will list hotel rates for dates of your travel @ discounts better than priceline and its ilk.
Another tip for business...The further south you go, try to hit cities with Military bases, google eastcoast military bases to find the metro areas surrounding them! Not always easy, like FT Bragg, NC is outside Fayetteville, but business wise it is a pretty dead town, so go to Raleigh, NC instead.
Again, don't know what you mean by East Coast, so here is a site I still belong to back there, although I am a RB LV Mod, BestGFE.com. Hit their forums section, it is broken down into East Coast regions. You should be able to work it from there! Oh, and on that site use your BEST lingerie Photos and face pics - there IS a reason! Lol
Good luck in your travels, and please remain safe!!!
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Long Island 2 Las Vegas