I'm trying to figure out if I can get by with developing the following with just daily data rather than intraday data:

I'm looking to use the open of tomorrow in the technical analysis, and based on that, enter on that same open of tomorrow. Would this be considered looking at the future and thus not possible in EasyLanguage?

Java,

I would consider this looking into the future. There is a DLL in the TS Forums that provides what you are looking for - if I recall correctly it was called Tomorrow DLL or something like this.
If this doesn't work you can do this with EasyLanguage Collections yourself. Store the date you need once into a map or list and then access it from there.

Regards,
ABCTG

Java 

I'm trying to figure out if I can get by with developing the following with just daily data rather than intraday data: I'm looking to use the open of tomorrow in the technical analysis, and based on that, enter on that same open of tomorrow. Would this be considered looking at the future and thus not possible in EasyLanguage?

I suspect you ask this for TradeStation, but your profile also lists MultiCharts, so for MultiCharts:

With Symbol_Open you can reference future bars (by using a negative index), though you will need to respect the Symbol_Length property since you obviously can not look more bars in the future than the amount of bars on your chart.